Version 4
SHEET 1 1220 680
WIRE 256 -320 256 -512
WIRE 384 -320 256 -320
WIRE 256 -304 256 -320
WIRE 96 -288 32 -288
WIRE 208 -288 96 -288
WIRE 384 -288 384 -320
WIRE -32 -240 -32 -512
WIRE 256 -192 256 -208
WIRE 384 -192 384 -224
WIRE 384 -192 256 -192
WIRE -64 -144 -64 -176
WIRE -32 -144 -32 -160
WIRE -32 -144 -64 -144
WIRE 32 -144 32 -288
WIRE 32 -144 -32 -144
WIRE 96 -112 96 -288
WIRE 176 -112 160 -112
WIRE 256 -112 256 -192
WIRE -32 -96 -32 -144
WIRE 256 -80 256 -112
WIRE -224 16 -224 0
WIRE -112 16 -112 0
WIRE 256 16 256 0
WIRE 272 16 256 16
WIRE -32 32 -32 -16
WIRE 256 48 256 16
WIRE -416 112 -416 80
WIRE -224 112 -224 96
WIRE -112 112 -112 96
FLAG -416 112 0
FLAG -224 112 0
FLAG -224 0 V15V
FLAG -416 0 V_Vein
FLAG -32 32 0
FLAG 256 -512 V15V
FLAG -112 112 0
FLAG -112 0 V5V
FLAG -32 -512 V15V
FLAG 256 48 0
FLAG -160 -176 0
FLAG -128 -176 V_Vein
SYMBOL voltage -416 -16 R0
WINDOW 3 -360 104 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PULSE(0 30 0 0 0 300m 800m 0)
SYMATTR InstName V1
SYMBOL voltage -224 0 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL res -16 0 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL voltage -112 0 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 5
SYMBOL res 272 16 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName RLast
SYMATTR Value 20
SYMBOL pmos 208 -208 M180
SYMATTR InstName M2
SYMATTR Value Si1013
SYMBOL rly_spdt0 -80 -208 M270
SYMATTR InstName U1
SYMBOL res 272 -128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 22
SYMBOL cap 160 -128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL schottky 400 -224 R180
WINDOW 0 -23 111 Left 2
WINDOW 3 -154 75 Left 2
SYMATTR InstName D2
SYMATTR Value PMEG2020AEA
SYMATTR Description Zener Diode
SYMATTR Type zener
TEXT 272 136 Left 2 !.tran 0 2400m 0 1m
TEXT 272 80 Left 2 ;{V_vari} .step param V_vari list   4  4
TEXT 328 40 Left 2 !.include relay.lib