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 30V Text Notes 3650 1800 0 50 ~ 0 Enable with 3V via MCU $EndSCHEMATC