alarms.sch

EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr B 17000 11000
encoding utf-8
Sheet 9 38
Title "Alarms and Safety"
Date ""
Rev "A"
Comp "RespiraWorks"
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Text Notes 4550 750  0    79   ~ 16
Power-down alarm
$Comp
L Device:C C?
U 1 1 5FDE7803
P 7750 2950
AR Path="/5FDE7803" Ref="C?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7803" Ref="C?"  Part="1" 
AR Path="/5E8FBD97/5FDE7803" Ref="C?"  Part="1" 
AR Path="/5E8E0754/5FDE7803" Ref="C?"  Part="1" 
AR Path="/5E8DFCAD/5FDE7803" Ref="C?"  Part="1" 
AR Path="/5E8DEDC0/5FDE7803" Ref="C?"  Part="1" 
AR Path="/5E8C8865/5FDE7803" Ref="C?"  Part="1" 
AR Path="/5E8E1F08/5FDE7803" Ref="C?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7803" Ref="C51"  Part="1" 
F 0 "C51" H 7550 2950 50  0000 C CNN
F 1 "10nF" H 7550 3050 50  0000 C CNN
F 2 "RespiraWorks_Std:C_0603_1608Metric" H 7788 2800 50  0001 C CNN
F 3 "~" H 7750 2950 50  0001 C CNN
F 4 "Murata" H 7750 2950 50  0001 C CNN "Manufacturer"
F 5 "NP0" H 7750 2950 50  0001 C CNN "Dielectric"
F 6 "GRM1885C1H103JA01D" H 7750 2950 50  0001 C CNN "Manufacturer PN"
F 7 "50V" H 7750 2950 50  0001 C CNN "Voltage"
F 8 " " H 7750 2950 50  0001 C CNN "DNP"
	1    7750 2950
	-1   0    0    1   
$EndComp
$Comp
L Device:C C?
U 1 1 5FDE7830
P 6900 1600
AR Path="/5FDE7830" Ref="C?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7830" Ref="C?"  Part="1" 
AR Path="/5E8FBD97/5FDE7830" Ref="C?"  Part="1" 
AR Path="/5E8E0754/5FDE7830" Ref="C?"  Part="1" 
AR Path="/5E8DFCAD/5FDE7830" Ref="C?"  Part="1" 
AR Path="/5E8DEDC0/5FDE7830" Ref="C?"  Part="1" 
AR Path="/5E8C8865/5FDE7830" Ref="C?"  Part="1" 
AR Path="/5E8E1F08/5FDE7830" Ref="C?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7830" Ref="C50"  Part="1" 
F 0 "C50" H 6900 1300 50  0000 C CNN
F 1 "100nF" H 7050 1400 50  0000 C CNN
F 2 "RespiraWorks_Std:C_0603_1608Metric" H 6938 1450 50  0001 C CNN
F 3 "~" H 6900 1600 50  0001 C CNN
F 4 "Kemet" H 6900 1600 50  0001 C CNN "Manufacturer"
F 5 "X7R" H 6900 1600 50  0001 C CNN "Dielectric"
F 6 "C0603C104K5RACTU" H 6900 1600 50  0001 C CNN "Manufacturer PN"
F 7 "50V" H 6900 1600 50  0001 C CNN "Voltage"
F 8 " " H 6900 1600 50  0001 C CNN "DNP"
	1    6900 1600
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FDE7836
P 6900 1750
AR Path="/5FDE7836" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7836" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/5FDE7836" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/5FDE7836" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/5FDE7836" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/5FDE7836" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/5FDE7836" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/5FDE7836" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7836" Ref="#PWR0148"  Part="1" 
F 0 "#PWR0148" H 6900 1500 50  0001 C CNN
F 1 "GND" H 6905 1577 50  0000 C CNN
F 2 "" H 6900 1750 50  0001 C CNN
F 3 "" H 6900 1750 50  0001 C CNN
	1    6900 1750
	1    0    0    -1  
$EndComp
$Comp
L Device:D_Zener_ALT D?
U 1 1 5FDE7870
P 1350 2350
AR Path="/5FDE7870" Ref="D?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7870" Ref="D?"  Part="1" 
AR Path="/5E8A4ABF/5FDE7870" Ref="D?"  Part="1" 
AR Path="/5E8E1F08/5FDE7870" Ref="D?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7870" Ref="D8"  Part="1" 
F 0 "D8" V 1250 2100 50  0000 L CNN
F 1 "2.0V" V 1350 2050 50  0000 L CNN
F 2 "RespiraWorks_Std:D_SOD-123" H 1350 2350 50  0001 C CNN
F 3 "~" H 1350 2350 50  0001 C CNN
F 4 "ON Semiconductor" H 1350 2350 50  0001 C CNN "Manufacturer"
F 5 "MMSZ4679T1G" H 1350 2350 50  0001 C CNN "Manufacturer PN"
F 6 " " H 1350 2350 50  0001 C CNN "DNP"
	1    1350 2350
	0    1    1    0   
$EndComp
$Comp
L Device:Q_NPN_BEC Q4
U 1 1 5FDE7881
P 1700 2850
F 0 "Q4" H 1500 2550 50  0000 L CNN
F 1 "MMBT3904" H 1300 2450 50  0000 L CNN
F 2 "RespiraWorks_Std:SOT-23" H 1900 2775 50  0001 L CIN
F 3 "https://www.fairchildsemi.com/datasheets/2N/2N3904.pdf" H 1700 2850 50  0001 L CNN
F 4 "Diodes Inc." H 1700 2850 50  0001 C CNN "Manufacturer"
F 5 "MMBT3904-7-F" H 1700 2850 50  0001 C CNN "Manufacturer PN"
F 6 " " H 1700 2850 50  0001 C CNN "DNP"
	1    1700 2850
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FDE7889
P 1500 2700
AR Path="/5FDE7889" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7889" Ref="R?"  Part="1" 
AR Path="/5E8C8865/5FDE7889" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/5FDE7889" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7889" Ref="R55"  Part="1" 
F 0 "R55" H 1400 2600 50  0000 C CNN
F 1 "10k" H 1450 2500 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 1430 2700 50  0001 C CNN
F 3 "~" H 1500 2700 50  0001 C CNN
F 4 "Yageo" H 1500 2700 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 1500 2700 50  0001 C CNN "Manufacturer PN"
F 6 " " H 1500 2700 50  0001 C CNN "DNP"
	1    1500 2700
	-1   0    0    1   
$EndComp
Wire Wire Line
	1500 2550 1350 2550
Wire Wire Line
	1350 2550 1350 2500
$Comp
L power:GND #PWR?
U 1 1 5FDE7891
P 1800 3050
AR Path="/5FDE7891" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/5FDE7891" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7891" Ref="#PWR0132"  Part="1" 
F 0 "#PWR0132" H 1800 2800 50  0001 C CNN
F 1 "GND" H 1805 2877 50  0000 C CNN
F 2 "" H 1800 3050 50  0001 C CNN
F 3 "" H 1800 3050 50  0001 C CNN
	1    1800 3050
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FDE7899
P 1350 2700
AR Path="/5FDE7899" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7899" Ref="R?"  Part="1" 
AR Path="/5E8C8865/5FDE7899" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/5FDE7899" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7899" Ref="R54"  Part="1" 
F 0 "R54" H 1500 2650 50  0000 C CNN
F 1 "10k" H 1600 2750 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 1280 2700 50  0001 C CNN
F 3 "~" H 1350 2700 50  0001 C CNN
F 4 "Yageo" H 1350 2700 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 1350 2700 50  0001 C CNN "Manufacturer PN"
F 6 " " H 1350 2700 50  0001 C CNN "DNP"
	1    1350 2700
	-1   0    0    1   
$EndComp
Connection ~ 1350 2550
$Comp
L power:GND #PWR?
U 1 1 5FDE78A0
P 1350 2850
AR Path="/5FDE78A0" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/5FDE78A0" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/5FDE78A0" Ref="#PWR0130"  Part="1" 
F 0 "#PWR0130" H 1350 2600 50  0001 C CNN
F 1 "GND" H 1355 2677 50  0000 C CNN
F 2 "" H 1350 2850 50  0001 C CNN
F 3 "" H 1350 2850 50  0001 C CNN
	1    1350 2850
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FDE78CC
P 1800 1450
AR Path="/5FDE78CC" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/5FDE78CC" Ref="R?"  Part="1" 
AR Path="/5E8C8865/5FDE78CC" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/5FDE78CC" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/5FDE78CC" Ref="R56"  Part="1" 
F 0 "R56" H 1650 1400 50  0000 C CNN
F 1 "10k" H 1650 1500 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 1730 1450 50  0001 C CNN
F 3 "~" H 1800 1450 50  0001 C CNN
F 4 "Yageo" H 1800 1450 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 1800 1450 50  0001 C CNN "Manufacturer PN"
F 6 " " H 1800 1450 50  0001 C CNN "DNP"
	1    1800 1450
	-1   0    0    1   
$EndComp
Wire Wire Line
	1800 1600 1800 1900
$Comp
L Device:D_ALT D?
U 1 1 5FDE78F1
P 4350 1900
AR Path="/5E8FBD97/5FDE78F1" Ref="D?"  Part="1" 
AR Path="/5E8DEDC0/5FDE78F1" Ref="D?"  Part="1" 
AR Path="/5E8DFCAD/5FDE78F1" Ref="D?"  Part="1" 
AR Path="/5E8E0754/5FDE78F1" Ref="D?"  Part="1" 
AR Path="/5E8E1F08/5FDE78F1" Ref="D?"  Part="1" 
AR Path="/5FDE78F1" Ref="D?"  Part="1" 
AR Path="/5FCD4DF5/5FDE78F1" Ref="D12"  Part="1" 
F 0 "D12" H 4450 1850 50  0000 L CNN
F 1 "1N4448W" H 4700 1850 50  0000 L CNN
F 2 "RespiraWorks_Std:D_SOD-123" H 4350 1900 50  0001 C CNN
F 3 "~" H 4350 1900 50  0001 C CNN
F 4 "Diodes Inc." H 4350 1900 50  0001 C CNN "Manufacturer"
F 5 "1N4448W-7-F" H 4350 1900 50  0001 C CNN "Manufacturer PN"
F 6 " " H 4350 1900 50  0001 C CNN "DNP"
	1    4350 1900
	-1   0    0    1   
$EndComp
Connection ~ 1800 1900
Wire Wire Line
	4650 1750 4650 1900
Wire Wire Line
	4500 1900 4650 1900
Connection ~ 4650 1900
$Comp
L Device:R R?
U 1 1 5FDE78FE
P 4650 2800
AR Path="/5FDE78FE" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/5FDE78FE" Ref="R?"  Part="1" 
AR Path="/5E8C8865/5FDE78FE" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/5FDE78FE" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/5FDE78FE" Ref="R63"  Part="1" 
F 0 "R63" H 4500 2750 50  0000 C CNN
F 1 "100k" H 4400 2850 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 4580 2800 50  0001 C CNN
F 3 "~" H 4650 2800 50  0001 C CNN
F 4 "Yageo" H 4650 2800 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-07100KL" H 4650 2800 50  0001 C CNN "Manufacturer PN"
F 6 " " H 4650 2800 50  0001 C CNN "DNP"
	1    4650 2800
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FDE7904
P 4650 2950
AR Path="/5FDE7904" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/5FDE7904" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7904" Ref="#PWR0143"  Part="1" 
F 0 "#PWR0143" H 4650 2700 50  0001 C CNN
F 1 "GND" H 4655 2777 50  0000 C CNN
F 2 "" H 4650 2950 50  0001 C CNN
F 3 "" H 4650 2950 50  0001 C CNN
	1    4650 2950
	1    0    0    -1  
$EndComp
Wire Wire Line
	6900 1450 7250 1450
Wire Wire Line
	4650 1900 4650 2050
Text Notes 9450 1150 0    50   ~ 0
C4 (~~261 Hz) oscillator
Text Notes 6900 1150 0    50   ~ 0
~~1 Hz oscillator
Text Notes 1200 3450 0    50   ~ 0
Threshold ~~2.4-2.9V
Text Notes 3300 900  0    50   ~ 0
Sounds power-down alarm (powered from alarm battery) if any of the main power rails go down
Wire Wire Line
	1800 1900 4200 1900
$Comp
L Device:D_Zener_ALT D?
U 1 1 5FDE7A3B
P 3650 3350
AR Path="/5FDE7A3B" Ref="D?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7A3B" Ref="D?"  Part="1" 
AR Path="/5E8A4ABF/5FDE7A3B" Ref="D?"  Part="1" 
AR Path="/5E8E1F08/5FDE7A3B" Ref="D?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7A3B" Ref="D9"  Part="1" 
F 0 "D9" V 3550 3400 50  0000 L CNN
F 1 "3.3V" V 3650 3450 50  0000 L CNN
F 2 "RespiraWorks_Std:D_SOD-123" H 3650 3350 50  0001 C CNN
F 3 "~" H 3650 3350 50  0001 C CNN
F 4 "ON Semiconductor" H 3650 3350 50  0001 C CNN "Manufacturer"
F 5 "MMSZ4684T1G" H 3650 3350 50  0001 C CNN "Manufacturer PN"
F 6 " " H 3650 3350 50  0001 C CNN "DNP"
	1    3650 3350
	0    1    1    0   
$EndComp
$Comp
L Device:Q_NPN_BEC Q5
U 1 1 5FDE7A43
P 4000 4000
F 0 "Q5" H 4200 4000 50  0000 L CNN
F 1 "MMBT3904" H 4200 3900 50  0000 L CNN
F 2 "RespiraWorks_Std:SOT-23" H 4200 3925 50  0001 L CIN
F 3 "https://www.fairchildsemi.com/datasheets/2N/2N3904.pdf" H 4000 4000 50  0001 L CNN
F 4 "Diodes Inc." H 4000 4000 50  0001 C CNN "Manufacturer"
F 5 "MMBT3904-7-F" H 4000 4000 50  0001 C CNN "Manufacturer PN"
F 6 " " H 4000 4000 50  0001 C CNN "DNP"
	1    4000 4000
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FDE7A4B
P 3800 3850
AR Path="/5FDE7A4B" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7A4B" Ref="R?"  Part="1" 
AR Path="/5E8C8865/5FDE7A4B" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/5FDE7A4B" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7A4B" Ref="R59"  Part="1" 
F 0 "R59" H 3700 3750 50  0000 C CNN
F 1 "10k" H 3750 3650 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 3730 3850 50  0001 C CNN
F 3 "~" H 3800 3850 50  0001 C CNN
F 4 "Yageo" H 3800 3850 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 3800 3850 50  0001 C CNN "Manufacturer PN"
F 6 " " H 3800 3850 50  0001 C CNN "DNP"
	1    3800 3850
	-1   0    0    1   
$EndComp
Wire Wire Line
	3800 3700 3650 3700
$Comp
L power:GND #PWR?
U 1 1 5FDE7A52
P 4100 4200
AR Path="/5FDE7A52" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/5FDE7A52" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7A52" Ref="#PWR0138"  Part="1" 
F 0 "#PWR0138" H 4100 3950 50  0001 C CNN
F 1 "GND" H 4105 4027 50  0000 C CNN
F 2 "" H 4100 4200 50  0001 C CNN
F 3 "" H 4100 4200 50  0001 C CNN
	1    4100 4200
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 5FDE7A5A
P 3650 3850
AR Path="/5FDE7A5A" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7A5A" Ref="R?"  Part="1" 
AR Path="/5E8C8865/5FDE7A5A" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/5FDE7A5A" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7A5A" Ref="R57"  Part="1" 
F 0 "R57" H 3800 3800 50  0000 C CNN
F 1 "10k" H 3900 3900 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 3580 3850 50  0001 C CNN
F 3 "~" H 3650 3850 50  0001 C CNN
F 4 "Yageo" H 3650 3850 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 3650 3850 50  0001 C CNN "Manufacturer PN"
F 6 " " H 3650 3850 50  0001 C CNN "DNP"
	1    3650 3850
	-1   0    0    1   
$EndComp
Connection ~ 3650 3700
$Comp
L power:GND #PWR?
U 1 1 5FDE7A61
P 3650 4000
AR Path="/5FDE7A61" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/5FDE7A61" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7A61" Ref="#PWR0134"  Part="1" 
F 0 "#PWR0134" H 3650 3750 50  0001 C CNN
F 1 "GND" H 3655 3827 50  0000 C CNN
F 2 "" H 3650 4000 50  0001 C CNN
F 3 "" H 3650 4000 50  0001 C CNN
	1    3650 4000
	1    0    0    -1  
$EndComp
Wire Wire Line
	3650 3500 3650 3700
Text Notes 3200 4350 0    50   ~ 0
Threshold ~~3.5-4.2V
Text Notes 2400 4950 0    50   ~ 0
10K resistors provide ~~50uA nominal\nthrough zeners near threshold input voltage;\n1K resistor provides ~~0.5mA through\nBAS21 near threshold input voltage
$Comp
L Device:D_ALT D?
U 1 1 5FDE7A6D
P 4350 2050
AR Path="/5E8FBD97/5FDE7A6D" Ref="D?"  Part="1" 
AR Path="/5E8DEDC0/5FDE7A6D" Ref="D?"  Part="1" 
AR Path="/5E8DFCAD/5FDE7A6D" Ref="D?"  Part="1" 
AR Path="/5E8E0754/5FDE7A6D" Ref="D?"  Part="1" 
AR Path="/5E8E1F08/5FDE7A6D" Ref="D?"  Part="1" 
AR Path="/5FDE7A6D" Ref="D?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7A6D" Ref="D13"  Part="1" 
F 0 "D13" H 4450 2000 50  0000 L CNN
F 1 "1N4448W" H 4650 2000 50  0000 L CNN
F 2 "RespiraWorks_Std:D_SOD-123" H 4350 2050 50  0001 C CNN
F 3 "~" H 4350 2050 50  0001 C CNN
F 4 "Diodes Inc." H 4350 2050 50  0001 C CNN "Manufacturer"
F 5 "DNP" H 4350 2150 50  0000 C CNN "DNP"
F 6 "1N4448W-7-F" H 4350 2050 50  0001 C CNN "Manufacturer PN"
	1    4350 2050
	-1   0    0    1   
$EndComp
Wire Wire Line
	4500 2050 4650 2050
Connection ~ 4650 2050
Wire Wire Line
	4650 2050 4650 2450
Wire Wire Line
	4200 2050 4100 2050
Wire Wire Line
	4100 1500 4100 2050
Wire Wire Line
	4100 2050 4100 3800
Connection ~ 4100 2050
$Comp
L Device:R R?
U 1 1 5FDE7A9A
P 4100 1350
AR Path="/5FDE7A9A" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7A9A" Ref="R?"  Part="1" 
AR Path="/5E8C8865/5FDE7A9A" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/5FDE7A9A" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7A9A" Ref="R61"  Part="1" 
F 0 "R61" H 3950 1300 50  0000 C CNN
F 1 "10k" H 3950 1400 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 4030 1350 50  0001 C CNN
F 3 "~" H 4100 1350 50  0001 C CNN
F 4 "Yageo" H 4100 1350 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 4100 1350 50  0001 C CNN "Manufacturer PN"
F 6 " " H 4100 1350 50  0001 C CNN "DNP"
	1    4100 1350
	-1   0    0    1   
$EndComp
$Comp
L Device:C C?
U 1 1 5FDE7AB7
P 4300 2700
AR Path="/5FDE7AB7" Ref="C?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7AB7" Ref="C?"  Part="1" 
AR Path="/5E8FBD97/5FDE7AB7" Ref="C?"  Part="1" 
AR Path="/5E8E0754/5FDE7AB7" Ref="C?"  Part="1" 
AR Path="/5E8DFCAD/5FDE7AB7" Ref="C?"  Part="1" 
AR Path="/5E8DEDC0/5FDE7AB7" Ref="C?"  Part="1" 
AR Path="/5E8C8865/5FDE7AB7" Ref="C?"  Part="1" 
AR Path="/5E8E1F08/5FDE7AB7" Ref="C?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7AB7" Ref="C47"  Part="1" 
F 0 "C47" V 4050 2750 50  0000 C CNN
F 1 "100nF" V 4150 2850 50  0000 C CNN
F 2 "RespiraWorks_Std:C_0603_1608Metric" H 4338 2550 50  0001 C CNN
F 3 "~" H 4300 2700 50  0001 C CNN
F 4 "Kemet" H 4300 2700 50  0001 C CNN "Manufacturer"
F 5 "X7R" H 4300 2700 50  0001 C CNN "Dielectric"
F 6 "C0603C104K5RACTU" H 4300 2700 50  0001 C CNN "Manufacturer PN"
F 7 "50V" H 4300 2700 50  0001 C CNN "Voltage"
F 8 " " H 4300 2700 50  0001 C CNN "DNP"
	1    4300 2700
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 5FDE7ABD
P 4300 2850
AR Path="/5FDE7ABD" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/5FDE7ABD" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/5FDE7ABD" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/5FDE7ABD" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/5FDE7ABD" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/5FDE7ABD" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/5FDE7ABD" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/5FDE7ABD" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/5FDE7ABD" Ref="#PWR0139"  Part="1" 
F 0 "#PWR0139" H 4300 2600 50  0001 C CNN
F 1 "GND" H 4305 2677 50  0000 C CNN
F 2 "" H 4300 2850 50  0001 C CNN
F 3 "" H 4300 2850 50  0001 C CNN
	1    4300 2850
	1    0    0    -1  
$EndComp
Wire Wire Line
	4300 2550 4300 2450
Wire Wire Line
	4300 2450 4650 2450
Connection ~ 4650 2450
Wire Wire Line
	4650 2450 4650 2650
Text Notes 4150 2450 0    50   ~ 0
~~1 ms filter
$Comp
L RespiraWorks:TLC555 U6
U 1 1 601E7AD0
P 7250 2300
F 0 "U6" H 7400 2750 50  0000 C CNN
F 1 "TLC555" H 7500 2650 50  0000 C CNN
F 2 "RespiraWorks_Std:SOIC-8_3.9x4.9mm_P1.27mm" H 8100 1900 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tlc555.pdf" H 8100 1900 50  0001 C CNN
F 4 "Texas Instruments" H 7250 2300 50  0001 C CNN "Manufacturer"
F 5 "TLC555QDR" H 7250 2300 50  0001 C CNN "Manufacturer PN"
F 6 "...IDR also acceptable" H 7250 2300 50  0001 C CNN "Sourcing Notes"
F 7 " " H 7250 2300 50  0001 C CNN "DNP"
	1    7250 2300
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 60238B92
P 6050 2200
AR Path="/60238B92" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/60238B92" Ref="R?"  Part="1" 
AR Path="/5E8C8865/60238B92" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/60238B92" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/60238B92" Ref="R66"  Part="1" 
F 0 "R66" H 5900 2150 50  0000 C CNN
F 1 "100k" H 5850 2250 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 5980 2200 50  0001 C CNN
F 3 "~" H 6050 2200 50  0001 C CNN
F 4 "Yageo" H 6050 2200 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-07100KL" H 6050 2200 50  0001 C CNN "Manufacturer PN"
F 6 " " H 6050 2200 50  0001 C CNN "DNP"
	1    6050 2200
	-1   0    0    1   
$EndComp
$Comp
L Device:R R?
U 1 1 6023A18D
P 6050 2500
AR Path="/6023A18D" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/6023A18D" Ref="R?"  Part="1" 
AR Path="/5E8C8865/6023A18D" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/6023A18D" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/6023A18D" Ref="R67"  Part="1" 
F 0 "R67" H 5900 2450 50  0000 C CNN
F 1 "442k" H 5850 2550 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 5980 2500 50  0001 C CNN
F 3 "~" H 6050 2500 50  0001 C CNN
F 4 "Yageo" H 6050 2500 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-07442KL" H 6050 2500 50  0001 C CNN "Manufacturer PN"
F 6 " " H 6050 2500 50  0001 C CNN "DNP"
	1    6050 2500
	-1   0    0    1   
$EndComp
$Comp
L Device:C C?
U 1 1 6023A792
P 6050 3050
AR Path="/6023A792" Ref="C?"  Part="1" 
AR Path="/5E8AFE9D/6023A792" Ref="C?"  Part="1" 
AR Path="/5E8FBD97/6023A792" Ref="C?"  Part="1" 
AR Path="/5E8E0754/6023A792" Ref="C?"  Part="1" 
AR Path="/5E8DFCAD/6023A792" Ref="C?"  Part="1" 
AR Path="/5E8DEDC0/6023A792" Ref="C?"  Part="1" 
AR Path="/5E8C8865/6023A792" Ref="C?"  Part="1" 
AR Path="/5E8E1F08/6023A792" Ref="C?"  Part="1" 
AR Path="/5FCD4DF5/6023A792" Ref="C49"  Part="1" 
F 0 "C49" H 5850 3000 50  0000 C CNN
F 1 "1uF" H 5850 3100 50  0000 C CNN
F 2 "RespiraWorks_Std:C_0603_1608Metric" H 6088 2900 50  0001 C CNN
F 3 "~" H 6050 3050 50  0001 C CNN
F 4 "Kemet" H 6050 3050 50  0001 C CNN "Manufacturer"
F 5 "X7R" H 6050 3050 50  0001 C CNN "Dielectric"
F 6 "C0805C105K5RACTU" H 6050 3050 50  0001 C CNN "Manufacturer PN"
F 7 "50V" H 6050 3050 50  0001 C CNN "Voltage"
F 8 " " H 6050 3050 50  0001 C CNN "DNP"
	1    6050 3050
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6023BF15
P 6050 3200
AR Path="/6023BF15" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/6023BF15" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/6023BF15" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/6023BF15" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/6023BF15" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/6023BF15" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/6023BF15" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/6023BF15" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6023BF15" Ref="#PWR0146"  Part="1" 
F 0 "#PWR0146" H 6050 2950 50  0001 C CNN
F 1 "GND" H 6055 3027 50  0000 C CNN
F 2 "" H 6050 3200 50  0001 C CNN
F 3 "" H 6050 3200 50  0001 C CNN
	1    6050 3200
	1    0    0    -1  
$EndComp
Wire Wire Line
	6050 2900 6050 2800
Wire Wire Line
	6750 2350 6050 2350
Connection ~ 6050 2350
Wire Wire Line
	6750 2650 6650 2650
Wire Wire Line
	6650 2650 6650 2800
Wire Wire Line
	6650 2800 6750 2800
Wire Wire Line
	6650 2800 6050 2800
Connection ~ 6650 2800
Connection ~ 6050 2800
Wire Wire Line
	6050 2800 6050 2650
Wire Wire Line
	7250 1450 7250 1900
$Comp
L power:GND #PWR?
U 1 1 60281237
P 7750 3100
AR Path="/60281237" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/60281237" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/60281237" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/60281237" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/60281237" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/60281237" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/60281237" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/60281237" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/60281237" Ref="#PWR0151"  Part="1" 
F 0 "#PWR0151" H 7750 2850 50  0001 C CNN
F 1 "GND" H 7755 2927 50  0000 C CNN
F 2 "" H 7750 3100 50  0001 C CNN
F 3 "" H 7750 3100 50  0001 C CNN
	1    7750 3100
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6028253E
P 7250 3000
AR Path="/6028253E" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/6028253E" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/6028253E" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/6028253E" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/6028253E" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/6028253E" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/6028253E" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/6028253E" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6028253E" Ref="#PWR0150"  Part="1" 
F 0 "#PWR0150" H 7250 2750 50  0001 C CNN
F 1 "GND" H 7255 2827 50  0000 C CNN
F 2 "" H 7250 3000 50  0001 C CNN
F 3 "" H 7250 3000 50  0001 C CNN
	1    7250 3000
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 6029C2A6
P 10500 2950
AR Path="/6029C2A6" Ref="C?"  Part="1" 
AR Path="/5E8AFE9D/6029C2A6" Ref="C?"  Part="1" 
AR Path="/5E8FBD97/6029C2A6" Ref="C?"  Part="1" 
AR Path="/5E8E0754/6029C2A6" Ref="C?"  Part="1" 
AR Path="/5E8DFCAD/6029C2A6" Ref="C?"  Part="1" 
AR Path="/5E8DEDC0/6029C2A6" Ref="C?"  Part="1" 
AR Path="/5E8C8865/6029C2A6" Ref="C?"  Part="1" 
AR Path="/5E8E1F08/6029C2A6" Ref="C?"  Part="1" 
AR Path="/5FCD4DF5/6029C2A6" Ref="C54"  Part="1" 
F 0 "C54" H 10300 2950 50  0000 C CNN
F 1 "10nF" H 10300 3050 50  0000 C CNN
F 2 "RespiraWorks_Std:C_0603_1608Metric" H 10538 2800 50  0001 C CNN
F 3 "~" H 10500 2950 50  0001 C CNN
F 4 "Murata" H 10500 2950 50  0001 C CNN "Manufacturer"
F 5 "GRM1885C1H103JA01D" H 10500 2950 50  0001 C CNN "Manufacturer PN"
F 6 "NP0" H 10500 2950 50  0001 C CNN "Dielectric"
F 7 "50V" H 10500 2950 50  0001 C CNN "Voltage"
F 8 " " H 10500 2950 50  0001 C CNN "DNP"
	1    10500 2950
	-1   0    0    1   
$EndComp
$Comp
L Device:C C?
U 1 1 6029C2AE
P 9650 1600
AR Path="/6029C2AE" Ref="C?"  Part="1" 
AR Path="/5E8AFE9D/6029C2AE" Ref="C?"  Part="1" 
AR Path="/5E8FBD97/6029C2AE" Ref="C?"  Part="1" 
AR Path="/5E8E0754/6029C2AE" Ref="C?"  Part="1" 
AR Path="/5E8DFCAD/6029C2AE" Ref="C?"  Part="1" 
AR Path="/5E8DEDC0/6029C2AE" Ref="C?"  Part="1" 
AR Path="/5E8C8865/6029C2AE" Ref="C?"  Part="1" 
AR Path="/5E8E1F08/6029C2AE" Ref="C?"  Part="1" 
AR Path="/5FCD4DF5/6029C2AE" Ref="C53"  Part="1" 
F 0 "C53" H 9650 1300 50  0000 C CNN
F 1 "100nF" H 9850 1400 50  0000 C CNN
F 2 "RespiraWorks_Std:C_0603_1608Metric" H 9688 1450 50  0001 C CNN
F 3 "~" H 9650 1600 50  0001 C CNN
F 4 "Kemet" H 9650 1600 50  0001 C CNN "Manufacturer"
F 5 "X7R" H 9650 1600 50  0001 C CNN "Dielectric"
F 6 "C0603C104K5RACTU" H 9650 1600 50  0001 C CNN "Manufacturer PN"
F 7 "50V" H 9650 1600 50  0001 C CNN "Voltage"
F 8 " " H 9650 1600 50  0001 C CNN "DNP"
	1    9650 1600
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6029C2B4
P 9650 1750
AR Path="/6029C2B4" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/6029C2B4" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/6029C2B4" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/6029C2B4" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/6029C2B4" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/6029C2B4" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/6029C2B4" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/6029C2B4" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6029C2B4" Ref="#PWR0154"  Part="1" 
F 0 "#PWR0154" H 9650 1500 50  0001 C CNN
F 1 "GND" H 9655 1577 50  0000 C CNN
F 2 "" H 9650 1750 50  0001 C CNN
F 3 "" H 9650 1750 50  0001 C CNN
	1    9650 1750
	1    0    0    -1  
$EndComp
Wire Wire Line
	9650 1450 10000 1450
$Comp
L RespiraWorks:TLC555 U7
U 1 1 6029C2C2
P 10000 2300
F 0 "U7" H 10150 2750 50  0000 C CNN
F 1 "TLC555" H 10250 2650 50  0000 C CNN
F 2 "RespiraWorks_Std:SOIC-8_3.9x4.9mm_P1.27mm" H 10850 1900 50  0001 C CNN
F 3 "http://www.ti.com/lit/ds/symlink/tlc555.pdf" H 10850 1900 50  0001 C CNN
F 4 "Texas Instruments" H 10000 2300 50  0001 C CNN "Manufacturer"
F 5 "TLC555QDR" H 10000 2300 50  0001 C CNN "Manufacturer PN"
F 6 "...IDR also acceptable" H 10000 2300 50  0001 C CNN "Sourcing Notes"
F 7 " " H 10000 2300 50  0001 C CNN "DNP"
	1    10000 2300
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 6029C2CA
P 8800 2200
AR Path="/6029C2CA" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/6029C2CA" Ref="R?"  Part="1" 
AR Path="/5E8C8865/6029C2CA" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/6029C2CA" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/6029C2CA" Ref="R69"  Part="1" 
F 0 "R69" H 8650 2150 50  0000 C CNN
F 1 "52.3k" H 8600 2250 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 8730 2200 50  0001 C CNN
F 3 "~" H 8800 2200 50  0001 C CNN
F 4 "Yageo" H 8800 2200 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0752K3L" H 8800 2200 50  0001 C CNN "Manufacturer PN"
F 6 " " H 8800 2200 50  0001 C CNN "DNP"
	1    8800 2200
	-1   0    0    1   
$EndComp
$Comp
L Device:R R?
U 1 1 6029C2D2
P 8800 2500
AR Path="/6029C2D2" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/6029C2D2" Ref="R?"  Part="1" 
AR Path="/5E8C8865/6029C2D2" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/6029C2D2" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/6029C2D2" Ref="R70"  Part="1" 
F 0 "R70" H 8650 2450 50  0000 C CNN
F 1 "249k" H 8600 2550 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 8730 2500 50  0001 C CNN
F 3 "~" H 8800 2500 50  0001 C CNN
F 4 "Yageo" H 8800 2500 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-07249KL" H 8800 2500 50  0001 C CNN "Manufacturer PN"
F 6 " " H 8800 2500 50  0001 C CNN "DNP"
	1    8800 2500
	-1   0    0    1   
$EndComp
$Comp
L Device:C C?
U 1 1 6029C2DA
P 8800 3050
AR Path="/6029C2DA" Ref="C?"  Part="1" 
AR Path="/5E8AFE9D/6029C2DA" Ref="C?"  Part="1" 
AR Path="/5E8FBD97/6029C2DA" Ref="C?"  Part="1" 
AR Path="/5E8E0754/6029C2DA" Ref="C?"  Part="1" 
AR Path="/5E8DFCAD/6029C2DA" Ref="C?"  Part="1" 
AR Path="/5E8DEDC0/6029C2DA" Ref="C?"  Part="1" 
AR Path="/5E8C8865/6029C2DA" Ref="C?"  Part="1" 
AR Path="/5E8E1F08/6029C2DA" Ref="C?"  Part="1" 
AR Path="/5FCD4DF5/6029C2DA" Ref="C52"  Part="1" 
F 0 "C52" H 8600 3000 50  0000 C CNN
F 1 "10nF" H 8550 3100 50  0000 C CNN
F 2 "RespiraWorks_Std:C_0603_1608Metric" H 8838 2900 50  0001 C CNN
F 3 "~" H 8800 3050 50  0001 C CNN
F 4 "Murata" H 8800 3050 50  0001 C CNN "Manufacturer"
F 5 "NP0" H 8800 3050 50  0001 C CNN "Dielectric"
F 6 "GRM1885C1H103JA01D" H 8800 3050 50  0001 C CNN "Manufacturer PN"
F 7 "50V" H 8800 3050 50  0001 C CNN "Voltage"
F 8 " " H 8800 3050 50  0001 C CNN "DNP"
	1    8800 3050
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6029C2E0
P 8800 3200
AR Path="/6029C2E0" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/6029C2E0" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/6029C2E0" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/6029C2E0" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/6029C2E0" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/6029C2E0" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/6029C2E0" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/6029C2E0" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6029C2E0" Ref="#PWR0153"  Part="1" 
F 0 "#PWR0153" H 8800 2950 50  0001 C CNN
F 1 "GND" H 8805 3027 50  0000 C CNN
F 2 "" H 8800 3200 50  0001 C CNN
F 3 "" H 8800 3200 50  0001 C CNN
	1    8800 3200
	1    0    0    -1  
$EndComp
Wire Wire Line
	8800 2900 8800 2800
Wire Wire Line
	9500 2350 8800 2350
Connection ~ 8800 2350
Wire Wire Line
	9500 2650 9400 2650
Wire Wire Line
	9400 2650 9400 2800
Wire Wire Line
	9400 2800 9500 2800
Wire Wire Line
	9400 2800 8800 2800
Connection ~ 9400 2800
Connection ~ 8800 2800
Wire Wire Line
	8800 2800 8800 2650
Wire Wire Line
	10000 1450 10000 1900
$Comp
L power:GND #PWR?
U 1 1 6029C2FA
P 10500 3100
AR Path="/6029C2FA" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/6029C2FA" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/6029C2FA" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/6029C2FA" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/6029C2FA" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/6029C2FA" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/6029C2FA" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/6029C2FA" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6029C2FA" Ref="#PWR0158"  Part="1" 
F 0 "#PWR0158" H 10500 2850 50  0001 C CNN
F 1 "GND" H 10505 2927 50  0000 C CNN
F 2 "" H 10500 3100 50  0001 C CNN
F 3 "" H 10500 3100 50  0001 C CNN
	1    10500 3100
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6029C300
P 10000 3000
AR Path="/6029C300" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/6029C300" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/6029C300" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/6029C300" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/6029C300" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/6029C300" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/6029C300" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/6029C300" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6029C300" Ref="#PWR0156"  Part="1" 
F 0 "#PWR0156" H 10000 2750 50  0001 C CNN
F 1 "GND" H 10005 2827 50  0000 C CNN
F 2 "" H 10000 3000 50  0001 C CNN
F 3 "" H 10000 3000 50  0001 C CNN
	1    10000 3000
	1    0    0    -1  
$EndComp
Wire Wire Line
	6750 2100 6400 2100
Wire Wire Line
	6400 2100 6400 1750
Wire Wire Line
	6400 1750 5150 1750
Wire Wire Line
	7750 2100 8400 2100
Wire Wire Line
	8400 2100 8400 1750
Wire Wire Line
	8400 1750 9250 1750
Wire Wire Line
	9250 1750 9250 2100
Wire Wire Line
	9250 2100 9500 2100
$Comp
L RespiraWorks_Std:Speaker_diode S1
U 1 1 6036DD4A
P 11600 1600
F 0 "S1" H 11750 1700 50  0000 L CNN
F 1 "CT-1205H-SMT" H 11650 1800 50  0000 L CNN
F 2 "RespiraWorks:CT-1205H-SMT-TR" H 11600 1400 50  0001 C CNN
F 3 "~" H 11590 1550 50  0001 C CNN
F 4 "CUI" H 11600 1600 50  0001 C CNN "Manufacturer"
F 5 "CT-1205H-SMT-TR" H 11600 1600 50  0001 C CNN "Manufacturer PN"
F 6 " " H 11600 1600 50  0001 C CNN "DNP"
	1    11600 1600
	1    0    0    -1  
$EndComp
$Comp
L RespiraWorks_Std:Speaker_diode S2
U 1 1 6036EAC4
P 13700 1800
F 0 "S2" H 13850 1900 50  0000 L CNN
F 1 "CT-1205H-SMT" H 13750 2000 50  0000 L CNN
F 2 "RespiraWorks:CT-1205H-SMT-TR" H 13700 1600 50  0001 C CNN
F 3 "~" H 13690 1750 50  0001 C CNN
F 4 "CUI" H 13700 1800 50  0001 C CNN "Manufacturer"
F 5 "CT-1205H-SMT-TR" H 13700 1800 50  0001 C CNN "Manufacturer PN"
F 6 " " H 13700 1800 50  0001 C CNN "DNP"
	1    13700 1800
	1    0    0    -1  
$EndComp
$Comp
L RespiraWorks_Std:Speaker_diode S4
U 1 1 6036FD31
P 15800 1800
F 0 "S4" H 15950 1900 50  0000 L CNN
F 1 "CT-1205H-SMT" H 15850 2000 50  0000 L CNN
F 2 "RespiraWorks:CT-1205H-SMT-TR" H 15800 1600 50  0001 C CNN
F 3 "~" H 15790 1750 50  0001 C CNN
F 4 "CUI" H 15800 1800 50  0001 C CNN "Manufacturer"
F 5 "CT-1205H-SMT-TR" H 15800 1800 50  0001 C CNN "Manufacturer PN"
F 6 " " H 15800 1800 50  0001 C CNN "DNP"
	1    15800 1800
	1    0    0    -1  
$EndComp
Text Notes 14300 1300 0    50   ~ 0
All 2.4 kHz, 88 dbA @ 5V
$Comp
L Device:Q_NPN_BEC Q9
U 1 1 603718DE
P 11450 2100
F 0 "Q9" H 11641 2146 50  0000 L CNN
F 1 "MMBT3904" H 11641 2055 50  0000 L CNN
F 2 "RespiraWorks_Std:SOT-23" H 11650 2200 50  0001 C CNN
F 3 "~" H 11450 2100 50  0001 C CNN
F 4 "Diodes Inc." H 11450 2100 50  0001 C CNN "Manufacturer"
F 5 "MMBT3904-7-F" H 11450 2100 50  0001 C CNN "Manufacturer PN"
F 6 " " H 11450 2100 50  0001 C CNN "DNP"
	1    11450 2100
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6037337F
P 11550 2300
AR Path="/6037337F" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/6037337F" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/6037337F" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/6037337F" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/6037337F" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/6037337F" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/6037337F" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/6037337F" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6037337F" Ref="#PWR0163"  Part="1" 
F 0 "#PWR0163" H 11550 2050 50  0001 C CNN
F 1 "GND" H 11555 2127 50  0000 C CNN
F 2 "" H 11550 2300 50  0001 C CNN
F 3 "" H 11550 2300 50  0001 C CNN
	1    11550 2300
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 60378284
P 10700 2100
AR Path="/60378284" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/60378284" Ref="R?"  Part="1" 
AR Path="/5E8C8865/60378284" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/60378284" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/60378284" Ref="R73"  Part="1" 
F 0 "R73" V 10600 2150 50  0000 C CNN
F 1 "1k" V 10800 2100 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 10630 2100 50  0001 C CNN
F 3 "~" H 10700 2100 50  0001 C CNN
F 4 "Yageo" H 10700 2100 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071KL" H 10700 2100 50  0001 C CNN "Manufacturer PN"
F 6 " " H 10700 2100 50  0001 C CNN "DNP"
	1    10700 2100
	0    -1   -1   0   
$EndComp
Wire Wire Line
	10850 2100 11000 2100
$Comp
L power:GND #PWR?
U 1 1 603943A9
P 13650 2500
AR Path="/603943A9" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/603943A9" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/603943A9" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/603943A9" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/603943A9" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/603943A9" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/603943A9" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/603943A9" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/603943A9" Ref="#PWR0168"  Part="1" 
F 0 "#PWR0168" H 13650 2250 50  0001 C CNN
F 1 "GND" H 13655 2327 50  0000 C CNN
F 2 "" H 13650 2500 50  0001 C CNN
F 3 "" H 13650 2500 50  0001 C CNN
	1    13650 2500
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6039831F
P 15750 2500
AR Path="/6039831F" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/6039831F" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/6039831F" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/6039831F" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/6039831F" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/6039831F" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/6039831F" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/6039831F" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6039831F" Ref="#PWR0174"  Part="1" 
F 0 "#PWR0174" H 15750 2250 50  0001 C CNN
F 1 "GND" H 15755 2327 50  0000 C CNN
F 2 "" H 15750 2500 50  0001 C CNN
F 3 "" H 15750 2500 50  0001 C CNN
	1    15750 2500
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 603ACD40
P 12900 2300
AR Path="/603ACD40" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/603ACD40" Ref="R?"  Part="1" 
AR Path="/5E8C8865/603ACD40" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/603ACD40" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/603ACD40" Ref="R79"  Part="1" 
F 0 "R79" V 12800 2350 50  0000 C CNN
F 1 "1k" V 13000 2300 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 12830 2300 50  0001 C CNN
F 3 "~" H 12900 2300 50  0001 C CNN
F 4 "Yageo" H 12900 2300 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071KL" H 12900 2300 50  0001 C CNN "Manufacturer PN"
F 6 " " H 12900 2300 50  0001 C CNN "DNP"
	1    12900 2300
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 603AD698
P 15000 2300
AR Path="/603AD698" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/603AD698" Ref="R?"  Part="1" 
AR Path="/5E8C8865/603AD698" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/603AD698" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/603AD698" Ref="R85"  Part="1" 
F 0 "R85" V 14900 2350 50  0000 C CNN
F 1 "1k" V 15100 2300 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 14930 2300 50  0001 C CNN
F 3 "~" H 15000 2300 50  0001 C CNN
F 4 "Yageo" H 15000 2300 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071KL" H 15000 2300 50  0001 C CNN "Manufacturer PN"
F 6 " " H 15000 2300 50  0001 C CNN "DNP"
	1    15000 2300
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R?
U 1 1 603B51DE
P 11250 2250
AR Path="/603B51DE" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/603B51DE" Ref="R?"  Part="1" 
AR Path="/5E8C8865/603B51DE" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/603B51DE" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/603B51DE" Ref="R74"  Part="1" 
F 0 "R74" H 11050 2300 50  0000 C CNN
F 1 "1k" H 11050 2200 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 11180 2250 50  0001 C CNN
F 3 "~" H 11250 2250 50  0001 C CNN
F 4 "Yageo" H 11250 2250 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071KL" H 11250 2250 50  0001 C CNN "Manufacturer PN"
F 6 " " H 11250 2250 50  0001 C CNN "DNP"
	1    11250 2250
	1    0    0    -1  
$EndComp
Connection ~ 11250 2100
$Comp
L power:GND #PWR?
U 1 1 603BA0AB
P 11250 2400
AR Path="/603BA0AB" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/603BA0AB" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/603BA0AB" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/603BA0AB" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/603BA0AB" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/603BA0AB" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/603BA0AB" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/603BA0AB" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/603BA0AB" Ref="#PWR0159"  Part="1" 
F 0 "#PWR0159" H 11250 2150 50  0001 C CNN
F 1 "GND" H 11255 2227 50  0000 C CNN
F 2 "" H 11250 2400 50  0001 C CNN
F 3 "" H 11250 2400 50  0001 C CNN
	1    11250 2400
	1    0    0    -1  
$EndComp
$Comp
L Device:Q_NPN_BEC Q11
U 1 1 603C1C9F
P 13550 2300
F 0 "Q11" H 13741 2346 50  0000 L CNN
F 1 "MMBT3904" H 13741 2255 50  0000 L CNN
F 2 "RespiraWorks_Std:SOT-23" H 13750 2400 50  0001 C CNN
F 3 "~" H 13550 2300 50  0001 C CNN
F 4 "Diodes Inc." H 13550 2300 50  0001 C CNN "Manufacturer"
F 5 "MMBT3904-7-F" H 13550 2300 50  0001 C CNN "Manufacturer PN"
F 6 " " H 13550 2300 50  0001 C CNN "DNP"
	1    13550 2300
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 603C1CA7
P 13350 2450
AR Path="/603C1CA7" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/603C1CA7" Ref="R?"  Part="1" 
AR Path="/5E8C8865/603C1CA7" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/603C1CA7" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/603C1CA7" Ref="R80"  Part="1" 
F 0 "R80" H 13150 2500 50  0000 C CNN
F 1 "1k" H 13150 2400 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 13280 2450 50  0001 C CNN
F 3 "~" H 13350 2450 50  0001 C CNN
F 4 "Yageo" H 13350 2450 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071KL" H 13350 2450 50  0001 C CNN "Manufacturer PN"
F 6 " " H 13350 2450 50  0001 C CNN "DNP"
	1    13350 2450
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 603C1CAD
P 13350 2600
AR Path="/603C1CAD" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/603C1CAD" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/603C1CAD" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/603C1CAD" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/603C1CAD" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/603C1CAD" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/603C1CAD" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/603C1CAD" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/603C1CAD" Ref="#PWR0165"  Part="1" 
F 0 "#PWR0165" H 13350 2350 50  0001 C CNN
F 1 "GND" H 13355 2427 50  0000 C CNN
F 2 "" H 13350 2600 50  0001 C CNN
F 3 "" H 13350 2600 50  0001 C CNN
	1    13350 2600
	1    0    0    -1  
$EndComp
$Comp
L Device:Q_NPN_BEC Q13
U 1 1 603C6786
P 15650 2300
F 0 "Q13" H 15841 2346 50  0000 L CNN
F 1 "MMBT3904" H 15841 2255 50  0000 L CNN
F 2 "RespiraWorks_Std:SOT-23" H 15850 2400 50  0001 C CNN
F 3 "~" H 15650 2300 50  0001 C CNN
F 4 "Diodes Inc." H 15650 2300 50  0001 C CNN "Manufacturer"
F 5 "MMBT3904-7-F" H 15650 2300 50  0001 C CNN "Manufacturer PN"
F 6 " " H 15650 2300 50  0001 C CNN "DNP"
	1    15650 2300
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 603C678E
P 15450 2450
AR Path="/603C678E" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/603C678E" Ref="R?"  Part="1" 
AR Path="/5E8C8865/603C678E" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/603C678E" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/603C678E" Ref="R86"  Part="1" 
F 0 "R86" H 15250 2500 50  0000 C CNN
F 1 "1k" H 15250 2400 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 15380 2450 50  0001 C CNN
F 3 "~" H 15450 2450 50  0001 C CNN
F 4 "Yageo" H 15450 2450 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071KL" H 15450 2450 50  0001 C CNN "Manufacturer PN"
F 6 " " H 15450 2450 50  0001 C CNN "DNP"
	1    15450 2450
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 603C6794
P 15450 2600
AR Path="/603C6794" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/603C6794" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/603C6794" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/603C6794" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/603C6794" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/603C6794" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/603C6794" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/603C6794" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/603C6794" Ref="#PWR0172"  Part="1" 
F 0 "#PWR0172" H 15450 2350 50  0001 C CNN
F 1 "GND" H 15455 2427 50  0000 C CNN
F 2 "" H 15450 2600 50  0001 C CNN
F 3 "" H 15450 2600 50  0001 C CNN
	1    15450 2600
	1    0    0    -1  
$EndComp
Wire Wire Line
	13050 2300 13350 2300
Connection ~ 13350 2300
Wire Wire Line
	15150 2300 15450 2300
Connection ~ 15450 2300
$Comp
L RespiraWorks:+5V_GUI #PWR0173
U 1 1 6042D8C7
P 15750 1600
F 0 "#PWR0173" H 15750 1600 50  0001 C CNN
F 1 "+5V_GUI" H 15735 1773 50  0000 C CNN
F 2 "" H 15750 1600 50  0001 C CNN
F 3 "" H 15750 1600 50  0001 C CNN
	1    15750 1600
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0167
U 1 1 6042E3D3
P 13650 1600
F 0 "#PWR0167" H 13650 1450 50  0001 C CNN
F 1 "+5V" H 13665 1773 50  0000 C CNN
F 2 "" H 13650 1600 50  0001 C CNN
F 3 "" H 13650 1600 50  0001 C CNN
	1    13650 1600
	1    0    0    -1  
$EndComp
Text HLabel 12650 2300 0    50   Input ~ 0
Buzzer-CC
Text HLabel 14750 2300 0    50   Input ~ 0
Buzzer-GUI
Wire Wire Line
	10500 2100 10550 2100
$Comp
L RespiraWorks:+3.3V_Ctrl #PWR0129
U 1 1 60475DD7
P 1350 2200
F 0 "#PWR0129" H 1350 2200 50  0001 C CNN
F 1 "+3.3V_Ctrl" H 1335 2373 50  0000 C CNN
F 2 "" H 1350 2200 50  0001 C CNN
F 3 "" H 1350 2200 50  0001 C CNN
	1    1350 2200
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0133
U 1 1 6047F478
P 3650 3200
F 0 "#PWR0133" H 3650 3050 50  0001 C CNN
F 1 "+5V" H 3665 3373 50  0000 C CNN
F 2 "" H 3650 3200 50  0001 C CNN
F 3 "" H 3650 3200 50  0001 C CNN
	1    3650 3200
	1    0    0    -1  
$EndComp
$Comp
L power:+BATT #PWR?
U 1 1 605ACA2D
P 1800 1300
AR Path="/5FCD4B8E/605ACA2D" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/605ACA2D" Ref="#PWR0131"  Part="1" 
F 0 "#PWR0131" H 1800 1300 50  0001 C CNN
F 1 "+5V_Batt" H 1785 1473 50  0000 C CNN
F 2 "" H 1800 1300 50  0001 C CNN
F 3 "" H 1800 1300 50  0001 C CNN
	1    1800 1300
	1    0    0    -1  
$EndComp
$Comp
L power:+BATT #PWR?
U 1 1 605B1A32
P 4100 1200
AR Path="/5FCD4B8E/605B1A32" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/605B1A32" Ref="#PWR0137"  Part="1" 
F 0 "#PWR0137" H 4100 1200 50  0001 C CNN
F 1 "+5V_Batt" H 4085 1373 50  0000 C CNN
F 2 "" H 4100 1200 50  0001 C CNN
F 3 "" H 4100 1200 50  0001 C CNN
	1    4100 1200
	1    0    0    -1  
$EndComp
$Comp
L power:+BATT #PWR?
U 1 1 605B4D35
P 6050 2050
AR Path="/5FCD4B8E/605B4D35" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/605B4D35" Ref="#PWR0145"  Part="1" 
F 0 "#PWR0145" H 6050 2050 50  0001 C CNN
F 1 "+5V_Batt" H 6035 2223 50  0000 C CNN
F 2 "" H 6050 2050 50  0001 C CNN
F 3 "" H 6050 2050 50  0001 C CNN
	1    6050 2050
	1    0    0    -1  
$EndComp
$Comp
L power:+BATT #PWR?
U 1 1 605B8A1E
P 7250 1450
AR Path="/5FCD4B8E/605B8A1E" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/605B8A1E" Ref="#PWR0149"  Part="1" 
F 0 "#PWR0149" H 7250 1450 50  0001 C CNN
F 1 "+5V_Batt" H 7235 1623 50  0000 C CNN
F 2 "" H 7250 1450 50  0001 C CNN
F 3 "" H 7250 1450 50  0001 C CNN
	1    7250 1450
	1    0    0    -1  
$EndComp
Connection ~ 7250 1450
$Comp
L power:+BATT #PWR?
U 1 1 605BB9DB
P 10000 1450
AR Path="/5FCD4B8E/605BB9DB" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/605BB9DB" Ref="#PWR0155"  Part="1" 
F 0 "#PWR0155" H 10000 1450 50  0001 C CNN
F 1 "+5V_Batt" H 9985 1623 50  0000 C CNN
F 2 "" H 10000 1450 50  0001 C CNN
F 3 "" H 10000 1450 50  0001 C CNN
	1    10000 1450
	1    0    0    -1  
$EndComp
Connection ~ 10000 1450
$Comp
L power:+BATT #PWR?
U 1 1 605C0D2A
P 11550 1400
AR Path="/5FCD4B8E/605C0D2A" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/605C0D2A" Ref="#PWR0162"  Part="1" 
F 0 "#PWR0162" H 11550 1400 50  0001 C CNN
F 1 "+5V_Batt" H 11535 1573 50  0000 C CNN
F 2 "" H 11550 1400 50  0001 C CNN
F 3 "" H 11550 1400 50  0001 C CNN
	1    11550 1400
	1    0    0    -1  
$EndComp
Text Notes 14300 950  0    79   ~ 16
Software alarms
$Comp
L power:GND #PWR?
U 1 1 6092674C
P 6850 7650
AR Path="/6092674C" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/6092674C" Ref="#PWR?"  Part="1" 
AR Path="/5E8A4ABF/6092674C" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/6092674C" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6092674C" Ref="#PWR0147"  Part="1" 
AR Path="/5FCD4B8E/6092674C" Ref="#PWR?"  Part="1" 
F 0 "#PWR0147" H 6850 7400 50  0001 C CNN
F 1 "GND" H 6855 7477 50  0000 C CNN
F 2 "" H 6850 7650 50  0001 C CNN
F 3 "" H 6850 7650 50  0001 C CNN
	1    6850 7650
	1    0    0    -1  
$EndComp
$Comp
L power:+5V #PWR0135
U 1 1 6092675A
P 3650 7250
AR Path="/5FCD4DF5/6092675A" Ref="#PWR0135"  Part="1" 
AR Path="/5FCD4B8E/6092675A" Ref="#PWR?"  Part="1" 
F 0 "#PWR0135" H 3650 7100 50  0001 C CNN
F 1 "+5V" H 3665 7423 50  0000 C CNN
F 2 "" H 3650 7250 50  0001 C CNN
F 3 "" H 3650 7250 50  0001 C CNN
	1    3650 7250
	1    0    0    -1  
$EndComp
Wire Wire Line
	4400 7350 4400 7250
Connection ~ 4400 7250
Wire Wire Line
	4150 7250 4400 7250
Text Notes 3650 6300 0    79   ~ 16
Power ORing from alarm battery
$Comp
L Device:D_Zener_ALT D?
U 1 1 6092677A
P 3650 8150
AR Path="/6092677A" Ref="D?"  Part="1" 
AR Path="/5E8AFE9D/6092677A" Ref="D?"  Part="1" 
AR Path="/5E8A4ABF/6092677A" Ref="D?"  Part="1" 
AR Path="/5E8E1F08/6092677A" Ref="D?"  Part="1" 
AR Path="/5FCD4DF5/6092677A" Ref="D10"  Part="1" 
AR Path="/5FCD4B8E/6092677A" Ref="D?"  Part="1" 
F 0 "D10" V 3604 8229 50  0000 L CNN
F 1 "3.3V" V 3700 8250 50  0000 L CNN
F 2 "RespiraWorks_Std:D_SOD-123" H 3650 8150 50  0001 C CNN
F 3 "~" H 3650 8150 50  0001 C CNN
F 4 "ON Semiconductor" H 3650 8150 50  0001 C CNN "Manufacturer"
F 5 "MMSZ4684T1G" H 3650 8150 50  0001 C CNN "Manufacturer PN"
F 6 " " H 3650 8150 50  0001 C CNN "DNP"
	1    3650 8150
	0    1    1    0   
$EndComp
$Comp
L Device:Q_NPN_BEC Q6
U 1 1 60926782
P 4200 8650
AR Path="/5FCD4DF5/60926782" Ref="Q6"  Part="1" 
AR Path="/5FCD4B8E/60926782" Ref="Q?"  Part="1" 
F 0 "Q6" H 4000 8350 50  0000 L CNN
F 1 "MMBT3904" H 3800 8250 50  0000 L CNN
F 2 "RespiraWorks_Std:SOT-23" H 4400 8575 50  0001 L CIN
F 3 "https://www.fairchildsemi.com/datasheets/2N/2N3904.pdf" H 4200 8650 50  0001 L CNN
F 4 "Diodes Inc." H 4200 8650 50  0001 C CNN "Manufacturer"
F 5 "MMBT3904-7-F" H 4200 8650 50  0001 C CNN "Manufacturer PN"
F 6 " " H 4200 8650 50  0001 C CNN "DNP"
	1    4200 8650
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 6092678A
P 3800 8500
AR Path="/6092678A" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/6092678A" Ref="R?"  Part="1" 
AR Path="/5E8C8865/6092678A" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/6092678A" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/6092678A" Ref="R60"  Part="1" 
AR Path="/5FCD4B8E/6092678A" Ref="R?"  Part="1" 
F 0 "R60" H 3750 8700 50  0000 C CNN
F 1 "10k" H 3700 8800 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 3730 8500 50  0001 C CNN
F 3 "~" H 3800 8500 50  0001 C CNN
F 4 "Yageo" H 3800 8500 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 3800 8500 50  0001 C CNN "Manufacturer PN"
F 6 " " H 3800 8500 50  0001 C CNN "DNP"
	1    3800 8500
	-1   0    0    1   
$EndComp
Wire Wire Line
	3800 8350 3650 8350
Wire Wire Line
	3650 8350 3650 8300
$Comp
L power:GND #PWR?
U 1 1 60926792
P 4300 8850
AR Path="/60926792" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/60926792" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/60926792" Ref="#PWR0140"  Part="1" 
AR Path="/5FCD4B8E/60926792" Ref="#PWR?"  Part="1" 
F 0 "#PWR0140" H 4300 8600 50  0001 C CNN
F 1 "GND" H 4305 8677 50  0000 C CNN
F 2 "" H 4300 8850 50  0001 C CNN
F 3 "" H 4300 8850 50  0001 C CNN
	1    4300 8850
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 6092679A
P 3650 8500
AR Path="/6092679A" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/6092679A" Ref="R?"  Part="1" 
AR Path="/5E8C8865/6092679A" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/6092679A" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/6092679A" Ref="R58"  Part="1" 
AR Path="/5FCD4B8E/6092679A" Ref="R?"  Part="1" 
F 0 "R58" H 3800 8450 50  0000 C CNN
F 1 "10k" H 3900 8550 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 3580 8500 50  0001 C CNN
F 3 "~" H 3650 8500 50  0001 C CNN
F 4 "Yageo" H 3650 8500 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 3650 8500 50  0001 C CNN "Manufacturer PN"
F 6 " " H 3650 8500 50  0001 C CNN "DNP"
	1    3650 8500
	-1   0    0    1   
$EndComp
Connection ~ 3650 8350
$Comp
L power:GND #PWR?
U 1 1 609267A1
P 3650 8650
AR Path="/609267A1" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/609267A1" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/609267A1" Ref="#PWR0136"  Part="1" 
AR Path="/5FCD4B8E/609267A1" Ref="#PWR?"  Part="1" 
F 0 "#PWR0136" H 3650 8400 50  0001 C CNN
F 1 "GND" H 3655 8477 50  0000 C CNN
F 2 "" H 3650 8650 50  0001 C CNN
F 3 "" H 3650 8650 50  0001 C CNN
	1    3650 8650
	1    0    0    -1  
$EndComp
Wire Wire Line
	3650 7250 3650 8000
$Comp
L Device:Q_PNP_BEC Q7
U 1 1 609267AA
P 5050 7350
AR Path="/5FCD4DF5/609267AA" Ref="Q7"  Part="1" 
AR Path="/5FCD4B8E/609267AA" Ref="Q?"  Part="1" 
F 0 "Q7" V 5378 7350 50  0000 C CNN
F 1 "MMBT2907A" V 5287 7350 50  0000 C CNN
F 2 "RespiraWorks_Std:SOT-23" H 5250 7275 50  0001 L CIN
F 3 "https://www.fairchildsemi.com/datasheets/2N/2N3906.pdf" H 5050 7350 50  0001 L CNN
F 4 "Diodes Inc." H 5050 7350 50  0001 C CNN "Manufacturer"
F 5 "MMBT2907A-7-F" H 5050 7350 50  0001 C CNN "Manufacturer PN"
F 6 " " H 5050 7350 50  0001 C CNN "DNP"
	1    5050 7350
	0    -1   -1   0   
$EndComp
Wire Wire Line
	5250 7250 5300 7250
$Comp
L Device:Q_NPN_BEC Q8
U 1 1 609267B4
P 5150 8450
AR Path="/5FCD4DF5/609267B4" Ref="Q8"  Part="1" 
AR Path="/5FCD4B8E/609267B4" Ref="Q?"  Part="1" 
F 0 "Q8" H 5350 8400 50  0000 L CNN
F 1 "MMBT3904" H 5250 8300 50  0000 L CNN
F 2 "RespiraWorks_Std:SOT-23" H 5350 8375 50  0001 L CIN
F 3 "https://www.fairchildsemi.com/datasheets/2N/2N3904.pdf" H 5150 8450 50  0001 L CNN
F 4 "Diodes Inc." H 5150 8450 50  0001 C CNN "Manufacturer"
F 5 "MMBT3904-7-F" H 5150 8450 50  0001 C CNN "Manufacturer PN"
F 6 " " H 5150 8450 50  0001 C CNN "DNP"
	1    5150 8450
	-1   0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 609267BC
P 5050 7700
AR Path="/609267BC" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/609267BC" Ref="R?"  Part="1" 
AR Path="/5E8C8865/609267BC" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/609267BC" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/609267BC" Ref="R64"  Part="1" 
AR Path="/5FCD4B8E/609267BC" Ref="R?"  Part="1" 
F 0 "R64" H 4900 7650 50  0000 C CNN
F 1 "2k" H 4900 7750 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 4980 7700 50  0001 C CNN
F 3 "~" H 5050 7700 50  0001 C CNN
F 4 "Yageo" H 5050 7700 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-072KL" H 5050 7700 50  0001 C CNN "Manufacturer PN"
F 6 " " H 5050 7700 50  0001 C CNN "DNP"
	1    5050 7700
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR?
U 1 1 609267C2
P 5050 8650
AR Path="/609267C2" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/609267C2" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/609267C2" Ref="#PWR0144"  Part="1" 
AR Path="/5FCD4B8E/609267C2" Ref="#PWR?"  Part="1" 
F 0 "#PWR0144" H 5050 8400 50  0001 C CNN
F 1 "GND" H 5055 8477 50  0000 C CNN
F 2 "" H 5050 8650 50  0001 C CNN
F 3 "" H 5050 8650 50  0001 C CNN
	1    5050 8650
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 609267CA
P 6250 8050
AR Path="/609267CA" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/609267CA" Ref="R?"  Part="1" 
AR Path="/5E8C8865/609267CA" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/609267CA" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/609267CA" Ref="R68"  Part="1" 
AR Path="/5FCD4B8E/609267CA" Ref="R?"  Part="1" 
F 0 "R68" H 6100 8000 50  0000 C CNN
F 1 "10k" H 6100 8100 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 6180 8050 50  0001 C CNN
F 3 "~" H 6250 8050 50  0001 C CNN
F 4 "Yageo" H 6250 8050 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 6250 8050 50  0001 C CNN "Manufacturer PN"
F 6 " " H 6250 8050 50  0001 C CNN "DNP"
	1    6250 8050
	-1   0    0    1   
$EndComp
Wire Wire Line
	4600 8900 4600 8450
Wire Wire Line
	4600 8450 4300 8450
Text Notes 3650 6500 0    50   ~ 0
PNP circuit disables alarm battery output when +5V is present,\neven though battery voltage is higher than 5V
Text Notes 2800 8000 0    50   ~ 0
Threshold ~~3.5-4.2V
Text Notes 6300 8250 0    50   ~ 0
~~0.6 mA battery load
Wire Wire Line
	6700 7250 6850 7250
Connection ~ 5050 8250
Wire Wire Line
	6250 8200 6250 8450
Wire Wire Line
	6250 8900 6250 8450
Connection ~ 6250 8450
$Comp
L Device:R R?
U 1 1 609267E8
P 5300 7400
AR Path="/609267E8" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/609267E8" Ref="R?"  Part="1" 
AR Path="/5E8C8865/609267E8" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/609267E8" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/609267E8" Ref="R65"  Part="1" 
AR Path="/5FCD4B8E/609267E8" Ref="R?"  Part="1" 
F 0 "R65" H 5150 7350 50  0000 C CNN
F 1 "10k" H 5100 7200 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 5230 7400 50  0001 C CNN
F 3 "~" H 5300 7400 50  0001 C CNN
F 4 "Yageo" H 5300 7400 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 5300 7400 50  0001 C CNN "Manufacturer PN"
F 6 " " H 5300 7400 50  0001 C CNN "DNP"
	1    5300 7400
	-1   0    0    1   
$EndComp
Connection ~ 5300 7250
Wire Wire Line
	5300 7550 5050 7550
Connection ~ 5050 7550
$Comp
L Device:R R?
U 1 1 60926800
P 4400 8250
AR Path="/60926800" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/60926800" Ref="R?"  Part="1" 
AR Path="/5E8A4ABF/60926800" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/60926800" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/60926800" Ref="R62"  Part="1" 
AR Path="/5FCD4B8E/60926800" Ref="R?"  Part="1" 
F 0 "R62" V 4350 7950 50  0000 C CNN
F 1 "1M" V 4350 8550 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 4330 8250 50  0001 C CNN
F 3 "~" H 4400 8250 50  0001 C CNN
F 4 "Yageo" H 4400 8250 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071ML" H 4400 8250 50  0001 C CNN "Manufacturer PN"
F 6 " " H 4400 8250 50  0001 C CNN "DNP"
	1    4400 8250
	0    1    1    0   
$EndComp
Wire Wire Line
	4550 8250 5050 8250
Wire Wire Line
	4000 8650 4000 8250
Wire Wire Line
	4000 8250 4250 8250
Wire Wire Line
	3650 7250 3850 7250
Connection ~ 3650 7250
Wire Wire Line
	3800 8650 4000 8650
Connection ~ 4000 8650
Text Notes 4050 8150 0    50   ~ 0
Optional hysteresis
Wire Wire Line
	6250 7250 6250 7900
Wire Wire Line
	5050 7850 5050 8250
Wire Wire Line
	4400 7250 4500 7250
$Comp
L Device:R R?
U 1 1 60926823
P 14600 6850
AR Path="/60926823" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/60926823" Ref="R?"  Part="1" 
AR Path="/5E8A4ABF/60926823" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/60926823" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/60926823" Ref="R84"  Part="1" 
AR Path="/5FCD4B8E/60926823" Ref="R?"  Part="1" 
F 0 "R84" V 14800 6900 50  0000 C CNN
F 1 "10k" V 14700 6850 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 14530 6850 50  0001 C CNN
F 3 "~" H 14600 6850 50  0001 C CNN
F 4 "Yageo" H 14600 6850 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 14600 6850 50  0001 C CNN "Manufacturer PN"
F 6 " " H 14600 6850 50  0001 C CNN "DNP"
	1    14600 6850
	0    -1   -1   0   
$EndComp
Connection ~ 13950 6850
$Comp
L power:GND #PWR?
U 1 1 6092682A
P 11400 7350
AR Path="/6092682A" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/6092682A" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6092682A" Ref="#PWR0161"  Part="1" 
AR Path="/5FCD4B8E/6092682A" Ref="#PWR?"  Part="1" 
F 0 "#PWR0161" H 11400 7100 50  0001 C CNN
F 1 "GND" H 11405 7177 50  0000 C CNN
F 2 "" H 11400 7350 50  0001 C CNN
F 3 "" H 11400 7350 50  0001 C CNN
	1    11400 7350
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 60926832
P 11400 6450
AR Path="/60926832" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/60926832" Ref="R?"  Part="1" 
AR Path="/5E8A4ABF/60926832" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/60926832" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/60926832" Ref="R75"  Part="1" 
AR Path="/5FCD4B8E/60926832" Ref="R?"  Part="1" 
F 0 "R75" H 11250 6400 50  0000 C CNN
F 1 "680" H 11200 6500 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 11330 6450 50  0001 C CNN
F 3 "~" H 11400 6450 50  0001 C CNN
F 4 "Yageo" H 11400 6450 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-07680RL" H 11400 6450 50  0001 C CNN "Manufacturer PN"
F 6 " " H 11400 6450 50  0001 C CNN "DNP"
	1    11400 6450
	-1   0    0    1   
$EndComp
Text Notes 11100 5850 0    79   ~ 16
Low alarm battery monitor
$Comp
L Device:R R?
U 1 1 60926841
P 10200 7100
AR Path="/60926841" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/60926841" Ref="R?"  Part="1" 
AR Path="/5E8A4ABF/60926841" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/60926841" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/60926841" Ref="R71"  Part="1" 
AR Path="/5FCD4B8E/60926841" Ref="R?"  Part="1" 
F 0 "R71" H 10000 7150 50  0000 C CNN
F 1 "100k" H 9950 7050 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 10130 7100 50  0001 C CNN
F 3 "~" H 10200 7100 50  0001 C CNN
F 4 "Yageo" H 10200 7100 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-07100KL" H 10200 7100 50  0001 C CNN "Manufacturer PN"
F 6 " " H 10200 7100 50  0001 C CNN "DNP"
	1    10200 7100
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 60926849
P 10200 7400
AR Path="/60926849" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/60926849" Ref="R?"  Part="1" 
AR Path="/5E8A4ABF/60926849" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/60926849" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/60926849" Ref="R72"  Part="1" 
AR Path="/5FCD4B8E/60926849" Ref="R?"  Part="1" 
F 0 "R72" H 10000 7450 50  0000 C CNN
F 1 "100k" H 9950 7350 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 10130 7400 50  0001 C CNN
F 3 "~" H 10200 7400 50  0001 C CNN
F 4 "Yageo" H 10200 7400 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-07100KL" H 10200 7400 50  0001 C CNN "Manufacturer PN"
F 6 " " H 10200 7400 50  0001 C CNN "DNP"
	1    10200 7400
	1    0    0    -1  
$EndComp
Wire Wire Line
	10200 7250 10500 7250
Connection ~ 10200 7250
$Comp
L power:GND #PWR?
U 1 1 60926851
P 10200 7550
AR Path="/60926851" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/60926851" Ref="#PWR?"  Part="1" 
AR Path="/5E8A4ABF/60926851" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/60926851" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/60926851" Ref="#PWR0157"  Part="1" 
AR Path="/5FCD4B8E/60926851" Ref="#PWR?"  Part="1" 
F 0 "#PWR0157" H 10200 7300 50  0001 C CNN
F 1 "GND" H 10205 7377 50  0000 C CNN
F 2 "" H 10200 7550 50  0001 C CNN
F 3 "" H 10200 7550 50  0001 C CNN
	1    10200 7550
	1    0    0    -1  
$EndComp
$Comp
L Device:C C?
U 1 1 60926859
P 10500 7400
AR Path="/60926859" Ref="C?"  Part="1" 
AR Path="/5E8AFE9D/60926859" Ref="C?"  Part="1" 
AR Path="/5E8A4ABF/60926859" Ref="C?"  Part="1" 
AR Path="/5E8E1F08/60926859" Ref="C?"  Part="1" 
AR Path="/5FCD4DF5/60926859" Ref="C55"  Part="1" 
AR Path="/5FCD4B8E/60926859" Ref="C?"  Part="1" 
F 0 "C55" H 10300 7400 50  0000 C CNN
F 1 "10nF" H 10150 7500 50  0000 C CNN
F 2 "RespiraWorks_Std:C_0603_1608Metric" H 10538 7250 50  0001 C CNN
F 3 "~" H 10500 7400 50  0001 C CNN
F 4 "Murata" H 10500 7400 50  0001 C CNN "Manufacturer"
F 5 "NP0" H 10500 7400 50  0001 C CNN "Dielectric"
F 6 "GRM1885C1H103JA01D" H 10500 7400 50  0001 C CNN "Manufacturer PN"
F 7 "50V" H 10500 7400 50  0001 C CNN "Voltage"
F 8 " " H 10500 7400 50  0001 C CNN "DNP"
	1    10500 7400
	-1   0    0    1   
$EndComp
Connection ~ 10500 7250
Wire Wire Line
	10500 7550 10200 7550
Connection ~ 10200 7550
Wire Wire Line
	13950 6850 14450 6850
Text HLabel 15150 6850 2    50   Output ~ 0
Low-Alarm-Bat-Logic
Text Notes 8750 8300 0    50   ~ 0
Low battery threshold 5.1V\n(semi-arbitrary)\n\nThreshold ~~= 2.495V * ((Rlow||Rhyst)+Rhigh)/(Rlow||Rhyst)
Text Notes 11550 8650 0    50   ~ 0
~~38-75 mV hysteresis (on REF pin)\n\nHysteresis = (+5V_Batt - 2.495V)/Rhyst*(Rhigh || Rlow)\n(only valid @ trip point when TL431's REF pin = 2.495V;\nlarger hysteresis when REF voltage is lower because battery\nvoltage is << threshold voltage)
Text Notes 13300 6550 0    50   ~ 0
Limits current to FPGA and/or CC and/or RPi\ninput (150µA max.), clamped to 3.3V by ext. Schottkys
Wire Wire Line
	14750 6850 15150 6850
Text Notes 9050 7350 0    50   ~ 0
~~25µA battery load
$Comp
L RespiraWorks_Std:TL431DBZ U8
U 1 1 6092688D
P 11400 7250
AR Path="/5FCD4DF5/6092688D" Ref="U8"  Part="1" 
AR Path="/5FCD4B8E/6092688D" Ref="U?"  Part="1" 
F 0 "U8" V 11446 7180 50  0000 R CNN
F 1 "TL431LI" V 11355 7180 50  0000 R CNN
F 2 "RespiraWorks_Std:SOT-23" H 11400 7100 50  0001 C CIN
F 3 "" H 11400 7250 50  0001 C CIN
F 4 "Texas Instruments" H 11400 7250 50  0001 C CNN "Manufacturer"
F 5 "TL431LIAIDBZR" H 11400 7250 50  0001 C CNN "Manufacturer PN"
F 6 "...AQDBZR, BIDBZR, or BQDBZR also acceptable" H 11400 7250 50  0001 C CNN "Sourcing Notes"
F 7 " " H 11400 7250 50  0001 C CNN "DNP"
	1    11400 7250
	0    -1   -1   0   
$EndComp
Text Notes 11550 7500 0    50   ~ 0
1 mA min. required cathode current when on,\n1 µA max. cathode current drawn when off
Wire Wire Line
	10500 7250 11200 7250
Text Notes 9900 7600 0    50   ~ 0
Rlow
Text Notes 9900 7000 0    50   ~ 0
Rhigh
Text Notes 10300 7200 0    50   ~ 0
0.4µA max. into ref. pin
$Comp
L Device:R R?
U 1 1 6092689A
P 12050 6600
AR Path="/6092689A" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/6092689A" Ref="R?"  Part="1" 
AR Path="/5E8A4ABF/6092689A" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/6092689A" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/6092689A" Ref="R76"  Part="1" 
AR Path="/5FCD4B8E/6092689A" Ref="R?"  Part="1" 
F 0 "R76" V 12250 6600 50  0000 C CNN
F 1 "10k" V 12150 6600 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 11980 6600 50  0001 C CNN
F 3 "~" H 12050 6600 50  0001 C CNN
F 4 "Yageo" H 12050 6600 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 12050 6600 50  0001 C CNN "Manufacturer PN"
F 6 " " H 12050 6600 50  0001 C CNN "DNP"
	1    12050 6600
	0    -1   -1   0   
$EndComp
Wire Wire Line
	11400 6600 11900 6600
$Comp
L Device:Q_PNP_BEC Q10
U 1 1 609268A3
P 12400 6600
AR Path="/5FCD4DF5/609268A3" Ref="Q10"  Part="1" 
AR Path="/5FCD4B8E/609268A3" Ref="Q?"  Part="1" 
F 0 "Q10" V 12728 6600 50  0000 C CNN
F 1 "MMBT2907A" V 12637 6600 50  0000 C CNN
F 2 "RespiraWorks_Std:SOT-23" H 12600 6525 50  0001 L CIN
F 3 "https://www.fairchildsemi.com/datasheets/2N/2N3906.pdf" H 12400 6600 50  0001 L CNN
F 4 "Diodes Inc." H 12400 6600 50  0001 C CNN "Manufacturer"
F 5 "MMBT2907A-7-F" H 12400 6600 50  0001 C CNN "Manufacturer PN"
F 6 " " H 12400 6600 50  0001 C CNN "DNP"
	1    12400 6600
	1    0    0    1   
$EndComp
Text Notes 9000 6550 0    50   ~ 0
On: Cathode current = 2.2 mA (low batt.) to 4.4 mA (+5V)\n    Vbe=1.5V min. (before resistor) → Ib=150µA min.\nOff: Vbe < 1 mV
Wire Wire Line
	11400 6600 11400 7150
Connection ~ 11400 6600
Wire Wire Line
	12500 6800 12500 6850
$Comp
L Device:R R?
U 1 1 609268B5
P 12050 8050
AR Path="/609268B5" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/609268B5" Ref="R?"  Part="1" 
AR Path="/5E8A4ABF/609268B5" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/609268B5" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/609268B5" Ref="R77"  Part="1" 
AR Path="/5FCD4B8E/609268B5" Ref="R?"  Part="1" 
F 0 "R77" V 11950 8050 50  0000 C CNN
F 1 "1M" V 11850 8000 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 11980 8050 50  0001 C CNN
F 3 "~" H 12050 8050 50  0001 C CNN
F 4 "Yageo" H 12050 8050 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071ML" H 12050 8050 50  0001 C CNN "Manufacturer PN"
F 6 " " H 12050 8050 50  0001 C CNN "DNP"
	1    12050 8050
	0    1    1    0   
$EndComp
Text Notes 12150 7800 0    50   ~ 0
Rhyst
Wire Wire Line
	12200 8050 12300 8050
Wire Wire Line
	13350 8050 13350 6850
Connection ~ 13350 6850
Wire Wire Line
	13350 6850 13500 6850
Wire Wire Line
	11900 8050 11200 8050
Wire Wire Line
	11200 8050 11200 7250
Connection ~ 11200 7250
Wire Wire Line
	11200 7250 11250 7250
Wire Wire Line
	13500 6950 13500 6850
$Comp
L Device:R R?
U 1 1 609268C7
P 13500 7100
AR Path="/609268C7" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/609268C7" Ref="R?"  Part="1" 
AR Path="/5E8A4ABF/609268C7" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/609268C7" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/609268C7" Ref="R81"  Part="1" 
AR Path="/5FCD4B8E/609268C7" Ref="R?"  Part="1" 
F 0 "R81" H 13300 7150 50  0000 C CNN
F 1 "10k" H 13250 7050 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 13430 7100 50  0001 C CNN
F 3 "~" H 13500 7100 50  0001 C CNN
F 4 "Yageo" H 13500 7100 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-0710KL" H 13500 7100 50  0001 C CNN "Manufacturer PN"
F 6 " " H 13500 7100 50  0001 C CNN "DNP"
	1    13500 7100
	-1   0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 609268CD
P 13500 7250
AR Path="/609268CD" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/609268CD" Ref="#PWR?"  Part="1" 
AR Path="/5E8A4ABF/609268CD" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/609268CD" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/609268CD" Ref="#PWR0166"  Part="1" 
AR Path="/5FCD4B8E/609268CD" Ref="#PWR?"  Part="1" 
F 0 "#PWR0166" H 13500 7000 50  0001 C CNN
F 1 "GND" H 13505 7077 50  0000 C CNN
F 2 "" H 13500 7250 50  0001 C CNN
F 3 "" H 13500 7250 50  0001 C CNN
	1    13500 7250
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 609268D5
P 12450 8050
AR Path="/609268D5" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/609268D5" Ref="R?"  Part="1" 
AR Path="/5E8A4ABF/609268D5" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/609268D5" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/609268D5" Ref="R78"  Part="1" 
AR Path="/5FCD4B8E/609268D5" Ref="R?"  Part="1" 
F 0 "R78" V 12350 8050 50  0000 C CNN
F 1 "1M" V 12250 8000 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 12380 8050 50  0001 C CNN
F 3 "~" H 12450 8050 50  0001 C CNN
F 4 "Yageo" H 12450 8050 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071ML" H 12450 8050 50  0001 C CNN "Manufacturer PN"
F 6 " " H 12450 8050 50  0001 C CNN "DNP"
	1    12450 8050
	0    1    1    0   
$EndComp
Wire Wire Line
	12600 8050 13350 8050
Connection ~ 13500 6850
Wire Wire Line
	12500 6850 13350 6850
Wire Wire Line
	13950 6850 13950 7150
Wire Wire Line
	13500 6850 13750 6850
Text Label 8400 6900 0    50   ~ 0
Alarm-Bat
Wire Wire Line
	10200 6900 10200 6950
Text Notes 3900 6900 0    50   Italic 0
+5V_Batt voltage range is about\n4V (+5V minus large diode Vf) to\n5.5V (6V battery minus small diode Vf)
$Comp
L power:+BATT #PWR?
U 1 1 6097CCEB
P 11400 6300
AR Path="/5FCD4B8E/6097CCEB" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6097CCEB" Ref="#PWR0160"  Part="1" 
F 0 "#PWR0160" H 11400 6300 50  0001 C CNN
F 1 "+5V_Batt" H 11385 6473 50  0000 C CNN
F 2 "" H 11400 6300 50  0001 C CNN
F 3 "" H 11400 6300 50  0001 C CNN
	1    11400 6300
	1    0    0    -1  
$EndComp
$Comp
L power:+BATT #PWR?
U 1 1 6097EC49
P 12500 6400
AR Path="/5FCD4B8E/6097EC49" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6097EC49" Ref="#PWR0164"  Part="1" 
F 0 "#PWR0164" H 12500 6400 50  0001 C CNN
F 1 "+5V_Batt" H 12485 6573 50  0000 C CNN
F 2 "" H 12500 6400 50  0001 C CNN
F 3 "" H 12500 6400 50  0001 C CNN
	1    12500 6400
	1    0    0    -1  
$EndComp
Text HLabel 15150 7150 2    50   Output ~ 0
Low-Alarm-Bat
Wire Wire Line
	15150 7150 13950 7150
$Comp
L power:+BATT #PWR?
U 1 1 6099B92A
P 4500 7250
AR Path="/5FCD4B8E/6099B92A" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6099B92A" Ref="#PWR0142"  Part="1" 
F 0 "#PWR0142" H 4500 7250 50  0001 C CNN
F 1 "+5V_Batt" H 4485 7423 50  0000 C CNN
F 2 "" H 4500 7250 50  0001 C CNN
F 3 "" H 4500 7250 50  0001 C CNN
	1    4500 7250
	1    0    0    -1  
$EndComp
Connection ~ 4500 7250
Wire Wire Line
	4500 7250 4850 7250
Wire Wire Line
	6850 7250 6850 6900
Wire Wire Line
	6850 6900 10200 6900
Wire Wire Line
	1800 1900 1800 2650
$Comp
L Device:D_ALT D?
U 1 1 60C4ADB6
P 6550 7250
AR Path="/5E8FBD97/60C4ADB6" Ref="D?"  Part="1" 
AR Path="/5E8DEDC0/60C4ADB6" Ref="D?"  Part="1" 
AR Path="/5E8DFCAD/60C4ADB6" Ref="D?"  Part="1" 
AR Path="/5E8E0754/60C4ADB6" Ref="D?"  Part="1" 
AR Path="/5E8E1F08/60C4ADB6" Ref="D?"  Part="1" 
AR Path="/60C4ADB6" Ref="D?"  Part="1" 
AR Path="/5FCD4DF5/60C4ADB6" Ref="D14"  Part="1" 
F 0 "D14" H 6500 7450 50  0000 L CNN
F 1 "1N4448W" H 6400 7350 50  0000 L CNN
F 2 "RespiraWorks_Std:D_SOD-123" H 6550 7250 50  0001 C CNN
F 3 "~" H 6550 7250 50  0001 C CNN
F 4 "Diodes Inc." H 6550 7250 50  0001 C CNN "Manufacturer"
F 5 "1N4448W-7-F" H 6550 7250 50  0001 C CNN "Manufacturer PN"
F 6 " " H 6550 7250 50  0001 C CNN "DNP"
	1    6550 7250
	1    0    0    -1  
$EndComp
$Comp
L Device:D_ALT D?
U 1 1 60C50140
P 4000 7250
AR Path="/5E8FBD97/60C50140" Ref="D?"  Part="1" 
AR Path="/5E8DEDC0/60C50140" Ref="D?"  Part="1" 
AR Path="/5E8DFCAD/60C50140" Ref="D?"  Part="1" 
AR Path="/5E8E0754/60C50140" Ref="D?"  Part="1" 
AR Path="/5E8E1F08/60C50140" Ref="D?"  Part="1" 
AR Path="/60C50140" Ref="D?"  Part="1" 
AR Path="/5FCD4DF5/60C50140" Ref="D11"  Part="1" 
F 0 "D11" H 4000 7050 50  0000 L CNN
F 1 "1N4448W" H 3850 7150 50  0000 L CNN
F 2 "RespiraWorks_Std:D_SOD-123" H 4000 7250 50  0001 C CNN
F 3 "~" H 4000 7250 50  0001 C CNN
F 4 "Diodes Inc." H 4000 7250 50  0001 C CNN "Manufacturer"
F 5 "1N4448W-7-F" H 4000 7250 50  0001 C CNN "Manufacturer PN"
F 6 " " H 4000 7250 50  0001 C CNN "DNP"
	1    4000 7250
	-1   0    0    1   
$EndComp
$Comp
L RespiraWorks_Std:Conn_01x04 J?
U 1 1 60D4F314
P 7150 7350
AR Path="/5FCD5082/60D4F314" Ref="J?"  Part="1" 
AR Path="/6042B5C5/60D4F314" Ref="J?"  Part="1" 
AR Path="/5FCD4DF5/60D4F314" Ref="J10"  Part="1" 
F 0 "J10" H 7230 7342 50  0000 L CNN
F 1 "Alarm Battery (4x AA)" H 7230 7251 50  0000 L CNN
F 2 "RespiraWorks_Std:Molex_Micro-Fit_3.0_43650-0415_1x04_P3.00mm_Vertical" H 7150 7350 50  0001 C CNN
F 3 "~" H 7150 7350 50  0001 C CNN
F 4 "Molex" H 7150 7350 50  0001 C CNN "Manufacturer"
F 5 "43650-0415" H 7150 7350 50  0001 C CNN "Manufacturer PN"
F 6 " " H 7150 7350 50  0001 C CNN "DNP"
	1    7150 7350
	1    0    0    -1  
$EndComp
Wire Wire Line
	6950 7250 6850 7250
Connection ~ 6850 7250
Wire Wire Line
	6950 7450 6850 7450
Wire Wire Line
	6850 7450 6850 7650
NoConn ~ 6950 7550
NoConn ~ 6950 7350
Text Notes 14500 7300 0    50   ~ 0
Alternate output for indicator LED, etc.
$Comp
L RespiraWorks_Std:Speaker_diode S3
U 1 1 610C7825
P 14550 3400
F 0 "S3" H 14700 3500 50  0000 L CNN
F 1 "CT-1205H-SMT" H 14600 3600 50  0000 L CNN
F 2 "RespiraWorks:CT-1205H-SMT-TR" H 14550 3200 50  0001 C CNN
F 3 "~" H 14540 3350 50  0001 C CNN
F 4 "CUI" H 14550 3400 50  0001 C CNN "Manufacturer"
F 5 "CT-1205H-SMT-TR" H 14550 3400 50  0001 C CNN "Manufacturer PN"
F 6 " " H 14550 3400 50  0001 C CNN "DNP"
	1    14550 3400
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 610C782B
P 14500 4100
AR Path="/610C782B" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/610C782B" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/610C782B" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/610C782B" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/610C782B" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/610C782B" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/610C782B" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/610C782B" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/610C782B" Ref="#PWR0171"  Part="1" 
F 0 "#PWR0171" H 14500 3850 50  0001 C CNN
F 1 "GND" H 14505 3927 50  0000 C CNN
F 2 "" H 14500 4100 50  0001 C CNN
F 3 "" H 14500 4100 50  0001 C CNN
	1    14500 4100
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 610C7833
P 13750 3900
AR Path="/610C7833" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/610C7833" Ref="R?"  Part="1" 
AR Path="/5E8C8865/610C7833" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/610C7833" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/610C7833" Ref="R82"  Part="1" 
F 0 "R82" V 13650 3950 50  0000 C CNN
F 1 "1k" V 13850 3900 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 13680 3900 50  0001 C CNN
F 3 "~" H 13750 3900 50  0001 C CNN
F 4 "Yageo" H 13750 3900 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071KL" H 13750 3900 50  0001 C CNN "Manufacturer PN"
F 6 " " H 13750 3900 50  0001 C CNN "DNP"
	1    13750 3900
	0    -1   -1   0   
$EndComp
$Comp
L Device:Q_NPN_BEC Q12
U 1 1 610C7839
P 14400 3900
F 0 "Q12" H 14591 3946 50  0000 L CNN
F 1 "MMBT3904" H 14591 3855 50  0000 L CNN
F 2 "RespiraWorks_Std:SOT-23" H 14600 4000 50  0001 C CNN
F 3 "~" H 14400 3900 50  0001 C CNN
F 4 "Diodes Inc." H 14400 3900 50  0001 C CNN "Manufacturer"
F 5 "MMBT3904-7-F" H 14400 3900 50  0001 C CNN "Manufacturer PN"
F 6 " " H 14400 3900 50  0001 C CNN "DNP"
	1    14400 3900
	1    0    0    -1  
$EndComp
$Comp
L Device:R R?
U 1 1 610C7841
P 14200 4050
AR Path="/610C7841" Ref="R?"  Part="1" 
AR Path="/5E8AFE9D/610C7841" Ref="R?"  Part="1" 
AR Path="/5E8C8865/610C7841" Ref="R?"  Part="1" 
AR Path="/5E8E1F08/610C7841" Ref="R?"  Part="1" 
AR Path="/5FCD4DF5/610C7841" Ref="R83"  Part="1" 
F 0 "R83" H 14000 4100 50  0000 C CNN
F 1 "1k" H 14000 4000 50  0000 C CNN
F 2 "RespiraWorks_Std:R_0603_1608Metric" V 14130 4050 50  0001 C CNN
F 3 "~" H 14200 4050 50  0001 C CNN
F 4 "Yageo" H 14200 4050 50  0001 C CNN "Manufacturer"
F 5 "RC0603FR-071KL" H 14200 4050 50  0001 C CNN "Manufacturer PN"
F 6 " " H 14200 4050 50  0001 C CNN "DNP"
	1    14200 4050
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 610C7847
P 14200 4200
AR Path="/610C7847" Ref="#PWR?"  Part="1" 
AR Path="/5E8AFE9D/610C7847" Ref="#PWR?"  Part="1" 
AR Path="/5E8FBD97/610C7847" Ref="#PWR?"  Part="1" 
AR Path="/5E8E0754/610C7847" Ref="#PWR?"  Part="1" 
AR Path="/5E8DFCAD/610C7847" Ref="#PWR?"  Part="1" 
AR Path="/5E8DEDC0/610C7847" Ref="#PWR?"  Part="1" 
AR Path="/5E8C8865/610C7847" Ref="#PWR?"  Part="1" 
AR Path="/5E8E1F08/610C7847" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/610C7847" Ref="#PWR0169"  Part="1" 
F 0 "#PWR0169" H 14200 3950 50  0001 C CNN
F 1 "GND" H 14205 4027 50  0000 C CNN
F 2 "" H 14200 4200 50  0001 C CNN
F 3 "" H 14200 4200 50  0001 C CNN
	1    14200 4200
	1    0    0    -1  
$EndComp
Wire Wire Line
	13900 3900 14200 3900
Connection ~ 14200 3900
Text HLabel 13500 3900 0    50   Input ~ 0
Buzzer-FPGA
$Comp
L power:+5V #PWR0170
U 1 1 610CA729
P 14500 3200
F 0 "#PWR0170" H 14500 3050 50  0001 C CNN
F 1 "+5V" H 14515 3373 50  0000 C CNN
F 2 "" H 14500 3200 50  0001 C CNN
F 3 "" H 14500 3200 50  0001 C CNN
	1    14500 3200
	1    0    0    -1  
$EndComp
$Comp
L Connector:TestPoint TP?
U 1 1 60DD0241
P 11000 2100
AR Path="/5FCD50A5/60DD0241" Ref="TP?"  Part="1" 
AR Path="/6052CC9F/60DD0241" Ref="TP?"  Part="1" 
AR Path="/60DD0241" Ref="TP?"  Part="1" 
AR Path="/5FCD4D18/60DD0241" Ref="TP?"  Part="1" 
AR Path="/5FCD4DF5/60DD0241" Ref="TP80"  Part="1" 
F 0 "TP80" H 11000 2300 50  0000 C CNN
F 1 "TP" V 11050 2150 50  0001 C CNN
F 2 "RespiraWorks_Std:TestPoint_Pad_2.0x2.0mm" H 11200 2100 50  0001 C CNN
F 3 "~" H 11200 2100 50  0001 C CNN
F 4 " " H 11000 2100 50  0001 C CNN "DNP"
	1    11000 2100
	1    0    0    -1  
$EndComp
Connection ~ 11000 2100
Wire Wire Line
	11000 2100 11250 2100
$Comp
L Connector:TestPoint TP?
U 1 1 60DD5049
P 12700 2300
AR Path="/5FCD50A5/60DD5049" Ref="TP?"  Part="1" 
AR Path="/6052CC9F/60DD5049" Ref="TP?"  Part="1" 
AR Path="/60DD5049" Ref="TP?"  Part="1" 
AR Path="/5FCD4D18/60DD5049" Ref="TP?"  Part="1" 
AR Path="/5FCD4DF5/60DD5049" Ref="TP82"  Part="1" 
F 0 "TP82" H 12700 2500 50  0000 C CNN
F 1 "TP" V 12750 2350 50  0001 C CNN
F 2 "RespiraWorks_Std:TestPoint_Pad_2.0x2.0mm" H 12900 2300 50  0001 C CNN
F 3 "~" H 12900 2300 50  0001 C CNN
F 4 " " H 12700 2300 50  0001 C CNN "DNP"
	1    12700 2300
	1    0    0    -1  
$EndComp
Wire Wire Line
	12650 2300 12700 2300
Connection ~ 12700 2300
$Comp
L Connector:TestPoint TP?
U 1 1 60DDC110
P 14800 2300
AR Path="/5FCD50A5/60DDC110" Ref="TP?"  Part="1" 
AR Path="/6052CC9F/60DDC110" Ref="TP?"  Part="1" 
AR Path="/60DDC110" Ref="TP?"  Part="1" 
AR Path="/5FCD4D18/60DDC110" Ref="TP?"  Part="1" 
AR Path="/5FCD4DF5/60DDC110" Ref="TP85"  Part="1" 
F 0 "TP85" H 14800 2500 50  0000 C CNN
F 1 "TP" V 14850 2350 50  0001 C CNN
F 2 "RespiraWorks_Std:TestPoint_Pad_2.0x2.0mm" H 15000 2300 50  0001 C CNN
F 3 "~" H 15000 2300 50  0001 C CNN
F 4 " " H 14800 2300 50  0001 C CNN "DNP"
	1    14800 2300
	1    0    0    -1  
$EndComp
Wire Wire Line
	14750 2300 14800 2300
Connection ~ 14800 2300
$Comp
L Connector:TestPoint TP?
U 1 1 60DE12E2
P 13550 3900
AR Path="/5FCD50A5/60DE12E2" Ref="TP?"  Part="1" 
AR Path="/6052CC9F/60DE12E2" Ref="TP?"  Part="1" 
AR Path="/60DE12E2" Ref="TP?"  Part="1" 
AR Path="/5FCD4D18/60DE12E2" Ref="TP?"  Part="1" 
AR Path="/5FCD4DF5/60DE12E2" Ref="TP83"  Part="1" 
F 0 "TP83" H 13550 4100 50  0000 C CNN
F 1 "TP" V 13600 3950 50  0001 C CNN
F 2 "RespiraWorks_Std:TestPoint_Pad_2.0x2.0mm" H 13750 3900 50  0001 C CNN
F 3 "~" H 13750 3900 50  0001 C CNN
F 4 " " H 13550 3900 50  0001 C CNN "DNP"
	1    13550 3900
	1    0    0    -1  
$EndComp
Wire Wire Line
	13500 3900 13550 3900
Connection ~ 13550 3900
Wire Wire Line
	13600 3900 13550 3900
Wire Wire Line
	12750 2300 12700 2300
Wire Wire Line
	14850 2300 14800 2300
$Comp
L Connector:TestPoint TP?
U 1 1 60E108C8
P 5150 1750
AR Path="/5FCD50A5/60E108C8" Ref="TP?"  Part="1" 
AR Path="/6052CC9F/60E108C8" Ref="TP?"  Part="1" 
AR Path="/60E108C8" Ref="TP?"  Part="1" 
AR Path="/5FCD4D18/60E108C8" Ref="TP?"  Part="1" 
AR Path="/5FCD4DF5/60E108C8" Ref="TP79"  Part="1" 
F 0 "TP79" H 5150 1950 50  0000 C CNN
F 1 "PD-Alarm" H 5150 2050 50  0000 C CNN
F 2 "RespiraWorks_Std:TestPoint_Pad_2.0x2.0mm" H 5350 1750 50  0001 C CNN
F 3 "~" H 5350 1750 50  0001 C CNN
F 4 " " H 5150 1750 50  0001 C CNN "DNP"
	1    5150 1750
	1    0    0    -1  
$EndComp
Connection ~ 5150 1750
Wire Wire Line
	5150 1750 4650 1750
$Comp
L Connector:TestPoint TP?
U 1 1 60E22D40
P 11250 7200
AR Path="/5FCD50A5/60E22D40" Ref="TP?"  Part="1" 
AR Path="/6052CC9F/60E22D40" Ref="TP?"  Part="1" 
AR Path="/60E22D40" Ref="TP?"  Part="1" 
AR Path="/5FCD4D18/60E22D40" Ref="TP?"  Part="1" 
AR Path="/5FCD4DF5/60E22D40" Ref="TP81"  Part="1" 
F 0 "TP81" H 11250 7400 50  0000 C CNN
F 1 "TP" V 11300 7250 50  0001 C CNN
F 2 "RespiraWorks_Std:TestPoint_Pad_2.0x2.0mm" H 11450 7200 50  0001 C CNN
F 3 "~" H 11450 7200 50  0001 C CNN
F 4 " " H 11250 7200 50  0001 C CNN "DNP"
	1    11250 7200
	1    0    0    -1  
$EndComp
Wire Wire Line
	11250 7200 11250 7250
Connection ~ 11250 7250
Wire Wire Line
	11250 7250 11300 7250
$Comp
L Connector:TestPoint TP?
U 1 1 60E2D6C0
P 13750 6850
AR Path="/5FCD50A5/60E2D6C0" Ref="TP?"  Part="1" 
AR Path="/6052CC9F/60E2D6C0" Ref="TP?"  Part="1" 
AR Path="/60E2D6C0" Ref="TP?"  Part="1" 
AR Path="/5FCD4D18/60E2D6C0" Ref="TP?"  Part="1" 
AR Path="/5FCD4DF5/60E2D6C0" Ref="TP84"  Part="1" 
F 0 "TP84" H 13750 7050 50  0000 C CNN
F 1 "TP" V 13800 6900 50  0001 C CNN
F 2 "RespiraWorks_Std:TestPoint_Pad_2.0x2.0mm" H 13950 6850 50  0001 C CNN
F 3 "~" H 13950 6850 50  0001 C CNN
F 4 " " H 13750 6850 50  0001 C CNN "DNP"
	1    13750 6850
	1    0    0    -1  
$EndComp
Connection ~ 13750 6850
Wire Wire Line
	13750 6850 13950 6850
$Comp
L Device:CP C?
U 1 1 6053A452
P 4400 7500
AR Path="/601A64F8/6053A452" Ref="C?"  Part="1" 
AR Path="/601A64F8/60567144/6053A452" Ref="C?"  Part="1" 
AR Path="/6023BF6A/60567144/6053A452" Ref="C?"  Part="1" 
AR Path="/6023BF6A/6053A452" Ref="C?"  Part="1" 
AR Path="/5FCD4B8E/603C510C/6053A452" Ref="C?"  Part="1" 
AR Path="/6041384A/6053A452" Ref="C?"  Part="1" 
AR Path="/5FCD4DF5/6053A452" Ref="C48"  Part="1" 
F 0 "C48" H 4550 7500 50  0000 L CNN
F 1 "33uF" H 4550 7400 50  0000 L CNN
F 2 "RespiraWorks_Std:CP_Elec_6.3x7.7" H 4438 7350 50  0001 C CNN
F 3 "https://industrial.panasonic.com/cdbs/www-data/pdf/RDE0000/ABA0000C1181.pdf" H 4400 7500 50  0001 C CNN
F 4 "50V" H 4550 7300 50  0000 L CNN "Voltage"
F 5 "Panasonic" H 4400 7500 50  0001 C CNN "Manufacturer"
F 6 "EEE-FK1H330XP" H 4400 7500 50  0001 C CNN "Manufacturer PN"
F 7 "Aluminum" H 4400 7500 50  0001 C CNN "Dielectric"
F 8 " " H 4400 7500 50  0001 C CNN "DNP"
	1    4400 7500
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR?
U 1 1 6053A458
P 4400 7650
AR Path="/601A64F8/6053A458" Ref="#PWR?"  Part="1" 
AR Path="/601A64F8/60567144/6053A458" Ref="#PWR?"  Part="1" 
AR Path="/6023BF6A/6053A458" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4B8E/603C510C/6053A458" Ref="#PWR?"  Part="1" 
AR Path="/6041384A/6053A458" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/6053A458" Ref="#PWR0141"  Part="1" 
F 0 "#PWR0141" H 4400 7400 50  0001 C CNN
F 1 "GND" H 4405 7477 50  0000 C CNN
F 2 "" H 4400 7650 50  0001 C CNN
F 3 "" H 4400 7650 50  0001 C CNN
	1    4400 7650
	1    0    0    -1  
$EndComp
Text Notes 5100 8100 0    50   ~ 0
2mA Ib, can\nsupport ~~200 mA\nload on +5V_Batt
Connection ~ 6250 7250
Wire Wire Line
	6250 7250 6400 7250
Wire Wire Line
	5300 7250 6250 7250
Wire Wire Line
	4600 8900 6250 8900
Wire Wire Line
	5350 8450 6250 8450
Text Label 5450 1750 0    50   ~ 0
PD-Alarm
$Comp
L power:+BATT #PWR?
U 1 1 60522B65
P 8800 2050
AR Path="/5FCD4B8E/60522B65" Ref="#PWR?"  Part="1" 
AR Path="/5FCD4DF5/60522B65" Ref="#PWR0152"  Part="1" 
F 0 "#PWR0152" H 8800 2050 50  0001 C CNN
F 1 "+5V_Batt" H 8785 2223 50  0000 C CNN
F 2 "" H 8800 2050 50  0001 C CNN
F 3 "" H 8800 2050 50  0001 C CNN
	1    8800 2050
	1    0    0    -1  
$EndComp
$EndSCHEMATC