Version 4
SHEET 1 880 680
WIRE -288 -592 -560 -592
WIRE -176 -592 -288 -592
WIRE 800 -592 -112 -592
WIRE 400 -512 -32 -512
WIRE 800 -512 800 -592
WIRE 800 -512 480 -512
WIRE -288 -416 -288 -592
WIRE -288 -256 -288 -352
WIRE -288 -256 -304 -256
WIRE -192 -256 -288 -256
WIRE 112 -256 -128 -256
WIRE 224 -256 112 -256
WIRE 384 -256 224 -256
WIRE 800 -256 800 -512
WIRE 800 -256 480 -256
WIRE 224 -128 224 -256
WIRE -288 -112 -288 -256
WIRE 400 -112 400 -208
WIRE -560 -16 -560 -592
WIRE 224 -16 224 -48
WIRE 400 -16 400 -32
WIRE 400 -16 224 -16
WIRE 224 0 224 -16
WIRE 112 48 112 -256
WIRE 800 48 800 -256
WIRE 224 144 224 80
WIRE -32 176 -32 -512
WIRE 112 176 112 128
WIRE 112 176 -32 176
WIRE 192 176 112 176
WIRE 112 256 112 176
WIRE -560 400 -560 64
WIRE -288 400 -288 -48
WIRE -288 400 -560 400
WIRE 112 400 112 336
WIRE 112 400 -288 400
WIRE 224 400 224 208
WIRE 224 400 112 400
WIRE 800 400 800 128
WIRE 800 400 224 400
WIRE 112 432 112 400
FLAG 112 432 0
SYMBOL References\\TL431 224 176 M0
SYMATTR InstName U1
SYMBOL res 96 32 R0
SYMATTR InstName R1
SYMATTR Value 160k
SYMBOL res 96 240 R0
SYMATTR InstName R2
SYMATTR Value 22k
SYMBOL res 208 -16 R0
SYMATTR InstName R3
SYMATTR Value 1
SYMBOL res 208 -144 R0
SYMATTR InstName R4
SYMATTR Value 22k
SYMBOL res 384 -128 R0
SYMATTR InstName R5
SYMATTR Value 4k7
SYMBOL pmos 480 -208 M270
SYMATTR InstName M1
SYMATTR Value IRF7220
SYMBOL res 496 -528 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 1meg
SYMBOL res 816 144 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R7
SYMATTR Value 1
SYMBOL voltage -560 -32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(0 14 1 1 1 3 0 1)
SYMBOL schottky -192 -240 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value MBR1035
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky -304 -416 R0
SYMATTR InstName D3
SYMATTR Value MBR1035
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky -176 -576 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D4
SYMATTR Value MBR1035
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap -304 -112 R0
SYMATTR InstName C1
SYMATTR Value 1
SYMATTR SpiceLine IC=10
TEXT -338 410 Left 2 !.tran 202
TEXT -488 -88 Left 2 ;BAT(simulated)