EESchema Schematic File Version 4
LIBS:powerlatch-cache
EELAYER 26 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Transistor_BJT:TIP127 Q2
U 1 1 5DEAE833
P 5200 2150
F 0 "Q2" H 5407 2196 50  0000 L CNN
F 1 "TIP127" H 5407 2105 50  0000 L CNN
F 2 "Package_TO_SOT_THT:TO-220-3_Vertical" H 5400 2075 50  0001 L CIN
F 3 "http://www.fairchildsemi.com/ds/TI/TIP125.pdf" H 5200 2150 50  0001 L CNN
	1    5200 2150
	1    0    0    1   
$EndComp
$Comp
L Device:Q_NPN_EBC Q1
U 1 1 5DEAEC02
P 4000 2450
F 0 "Q1" H 4191 2496 50  0000 L CNN
F 1 "2N5551" H 4191 2405 50  0000 L CNN
F 2 "Package_TO_SOT_THT:TO-92L_Inline_Wide" H 4200 2550 50  0001 C CNN
F 3 "~" H 4000 2450 50  0001 C CNN
	1    4000 2450
	1    0    0    -1  
$EndComp
$Comp
L Device:R R5
U 1 1 5DEAECF1
P 3600 2650
F 0 "R5" H 3670 2696 50  0000 L CNN
F 1 "51k" H 3670 2605 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3530 2650 50  0001 C CNN
F 3 "~" H 3600 2650 50  0001 C CNN
	1    3600 2650
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0101
U 1 1 5DEAEDC8
P 4100 2950
F 0 "#PWR0101" H 4100 2700 50  0001 C CNN
F 1 "GND" H 4105 2777 50  0000 C CNN
F 2 "" H 4100 2950 50  0001 C CNN
F 3 "" H 4100 2950 50  0001 C CNN
	1    4100 2950
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0102
U 1 1 5DEAEDE0
P 3600 2950
F 0 "#PWR0102" H 3600 2700 50  0001 C CNN
F 1 "GND" H 3605 2777 50  0000 C CNN
F 2 "" H 3600 2950 50  0001 C CNN
F 3 "" H 3600 2950 50  0001 C CNN
	1    3600 2950
	1    0    0    -1  
$EndComp
Wire Wire Line
	3600 2950 3600 2800
Wire Wire Line
	4100 2950 4100 2650
Wire Wire Line
	3800 2450 3600 2450
Wire Wire Line
	3600 2450 3600 2500
$Comp
L Device:R R6
U 1 1 5DEAEE16
P 4650 2150
F 0 "R6" V 4443 2150 50  0000 C CNN
F 1 "10k" V 4534 2150 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 4580 2150 50  0001 C CNN
F 3 "~" H 4650 2150 50  0001 C CNN
	1    4650 2150
	0    1    1    0   
$EndComp
Wire Wire Line
	5000 2150 4900 2150
Wire Wire Line
	4500 2150 4100 2150
Wire Wire Line
	4100 2150 4100 2250
$Comp
L power:+BATT #PWR0103
U 1 1 5DEAF0A9
P 5300 1600
F 0 "#PWR0103" H 5300 1450 50  0001 C CNN
F 1 "+BATT" H 5315 1773 50  0000 C CNN
F 2 "" H 5300 1600 50  0001 C CNN
F 3 "" H 5300 1600 50  0001 C CNN
	1    5300 1600
	1    0    0    -1  
$EndComp
Wire Wire Line
	5300 1600 5300 1950
$Comp
L Device:R R7
U 1 1 5DEAF12D
P 4900 1850
F 0 "R7" H 4970 1896 50  0000 L CNN
F 1 "51k" H 4970 1805 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 4830 1850 50  0001 C CNN
F 3 "~" H 4900 1850 50  0001 C CNN
	1    4900 1850
	1    0    0    -1  
$EndComp
$Comp
L power:+BATT #PWR0104
U 1 1 5DEAF1E0
P 4900 1600
F 0 "#PWR0104" H 4900 1450 50  0001 C CNN
F 1 "+BATT" H 4915 1773 50  0000 C CNN
F 2 "" H 4900 1600 50  0001 C CNN
F 3 "" H 4900 1600 50  0001 C CNN
	1    4900 1600
	1    0    0    -1  
$EndComp
Wire Wire Line
	4900 1700 4900 1600
Wire Wire Line
	4900 2000 4900 2150
Connection ~ 4900 2150
Wire Wire Line
	4900 2150 4800 2150
$Comp
L Device:R R3
U 1 1 5DEAF5A5
P 3250 2450
F 0 "R3" V 3043 2450 50  0000 C CNN
F 1 "2k2" V 3134 2450 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3180 2450 50  0001 C CNN
F 3 "~" H 3250 2450 50  0001 C CNN
	1    3250 2450
	0    1    1    0   
$EndComp
Wire Wire Line
	3600 2450 3450 2450
Connection ~ 3600 2450
$Comp
L Diode:1N4007 D1
U 1 1 5DEAF799
P 2700 2450
F 0 "D1" H 2700 2234 50  0000 C CNN
F 1 "1N4007" H 2700 2325 50  0000 C CNN
F 2 "Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal" H 2700 2275 50  0001 C CNN
F 3 "http://www.vishay.com/docs/88503/1n4001.pdf" H 2700 2450 50  0001 C CNN
	1    2700 2450
	-1   0    0    1   
$EndComp
Wire Wire Line
	3100 2450 2850 2450
$Comp
L Device:R R4
U 1 1 5DEAF884
P 3450 2150
F 0 "R4" H 3380 2104 50  0000 R CNN
F 1 "2k2" H 3380 2195 50  0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 3380 2150 50  0001 C CNN
F 3 "~" H 3450 2150 50  0001 C CNN
	1    3450 2150
	-1   0    0    1   
$EndComp
Wire Wire Line
	3450 2450 3450 2300
Connection ~ 3450 2450
Wire Wire Line
	3450 2450 3400 2450
Wire Wire Line
	3450 2000 3450 1950
$Comp
L Device:R R2
U 1 1 5DEAFAB1
P 2450 2650
F 0 "R2" H 2380 2604 50  0000 R CNN
F 1 "2k" H 2380 2695 50  0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 2380 2650 50  0001 C CNN
F 3 "~" H 2450 2650 50  0001 C CNN
	1    2450 2650
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR0105
U 1 1 5DEB06C0
P 2450 2950
F 0 "#PWR0105" H 2450 2700 50  0001 C CNN
F 1 "GND" H 2455 2777 50  0000 C CNN
F 2 "" H 2450 2950 50  0001 C CNN
F 3 "" H 2450 2950 50  0001 C CNN
	1    2450 2950
	1    0    0    -1  
$EndComp
Wire Wire Line
	2450 2950 2450 2800
Wire Wire Line
	2450 2500 2450 2450
Wire Wire Line
	2450 2450 2550 2450
$Comp
L Switch:SW_Push SW1
U 1 1 5DEB1238
P 2450 2000
F 0 "SW1" V 2496 1952 50  0000 R CNN
F 1 "SW_Push" V 2405 1952 50  0000 R CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 2450 2200 50  0001 C CNN
F 3 "" H 2450 2200 50  0001 C CNN
	1    2450 2000
	0    -1   -1   0   
$EndComp
Wire Wire Line
	2450 2450 2450 2200
Connection ~ 2450 2450
$Comp
L Device:R R1
U 1 1 5DEB1A23
P 2450 1550
F 0 "R1" H 2380 1504 50  0000 R CNN
F 1 "30k" H 2380 1595 50  0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal" V 2380 1550 50  0001 C CNN
F 3 "~" H 2450 1550 50  0001 C CNN
	1    2450 1550
	-1   0    0    1   
$EndComp
Wire Wire Line
	2450 1800 2450 1700
$Comp
L power:+BATT #PWR0106
U 1 1 5DEB1CCE
P 2450 1350
F 0 "#PWR0106" H 2450 1200 50  0001 C CNN
F 1 "+BATT" H 2465 1523 50  0000 C CNN
F 2 "" H 2450 1350 50  0001 C CNN
F 3 "" H 2450 1350 50  0001 C CNN
	1    2450 1350
	1    0    0    -1  
$EndComp
Wire Wire Line
	2450 1400 2450 1350
$Comp
L Connector_Generic:Conn_01x01 J2
U 1 1 5DEB2370
P 5500 2450
F 0 "J2" H 5580 2492 50  0000 L CNN
F 1 "switched+" H 5580 2401 50  0000 L CNN
F 2 "TestPoint:TestPoint_THTPad_1.5x1.5mm_Drill0.7mm" H 5500 2450 50  0001 C CNN
F 3 "~" H 5500 2450 50  0001 C CNN
	1    5500 2450
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x01 J3
U 1 1 5DEB242C
P 5500 2800
F 0 "J3" H 5580 2842 50  0000 L CNN
F 1 "switched-" H 5580 2751 50  0000 L CNN
F 2 "TestPoint:TestPoint_THTPad_1.5x1.5mm_Drill0.7mm" H 5500 2800 50  0001 C CNN
F 3 "~" H 5500 2800 50  0001 C CNN
	1    5500 2800
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0107
U 1 1 5DEB2460
P 5300 2950
F 0 "#PWR0107" H 5300 2700 50  0001 C CNN
F 1 "GND" H 5305 2777 50  0000 C CNN
F 2 "" H 5300 2950 50  0001 C CNN
F 3 "" H 5300 2950 50  0001 C CNN
	1    5300 2950
	1    0    0    -1  
$EndComp
Wire Wire Line
	5300 2950 5300 2800
Wire Wire Line
	5300 2450 5300 2350
$Comp
L Connector_Generic:Conn_01x01 J1
U 1 1 5DEB2BD6
P 3450 1750
F 0 "J1" V 3416 1662 50  0000 R CNN
F 1 "enable" V 3325 1662 50  0000 R CNN
F 2 "TestPoint:TestPoint_THTPad_1.5x1.5mm_Drill0.7mm" H 3450 1750 50  0001 C CNN
F 3 "~" H 3450 1750 50  0001 C CNN
	1    3450 1750
	0    -1   -1   0   
$EndComp
$Comp
L power:+BATT #PWR0108
U 1 1 5DEB3005
P 2000 1350
F 0 "#PWR0108" H 2000 1200 50  0001 C CNN
F 1 "+BATT" H 2015 1523 50  0000 C CNN
F 2 "" H 2000 1350 50  0001 C CNN
F 3 "" H 2000 1350 50  0001 C CNN
	1    2000 1350
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0109
U 1 1 5DEB302C
P 2000 1600
F 0 "#PWR0109" H 2000 1350 50  0001 C CNN
F 1 "GND" H 2005 1427 50  0000 C CNN
F 2 "" H 2000 1600 50  0001 C CNN
F 3 "" H 2000 1600 50  0001 C CNN
	1    2000 1600
	1    0    0    -1  
$EndComp
$Comp
L Connector_Generic:Conn_01x01 J4
U 1 1 5DEB3053
P 1800 1350
F 0 "J4" H 1720 1125 50  0000 C CNN
F 1 "Bat+" H 1720 1216 50  0000 C CNN
F 2 "TestPoint:TestPoint_THTPad_1.5x1.5mm_Drill0.7mm" H 1800 1350 50  0001 C CNN
F 3 "~" H 1800 1350 50  0001 C CNN
	1    1800 1350
	-1   0    0    1   
$EndComp
$Comp
L Connector_Generic:Conn_01x01 J5
U 1 1 5DEB30F7
P 1800 1600
F 0 "J5" H 1720 1375 50  0000 C CNN
F 1 "Bat-" H 1720 1466 50  0000 C CNN
F 2 "TestPoint:TestPoint_THTPad_1.5x1.5mm_Drill0.7mm" H 1800 1600 50  0001 C CNN
F 3 "~" H 1800 1600 50  0001 C CNN
	1    1800 1600
	-1   0    0    1   
$EndComp
Text Notes 2750 1150 0    50   ~ 0
Input Voltage needs to be at least around 23V
Text Notes 3650 1800 0    50   ~ 0
Enable with 3V via MCU
$EndSCHEMATC