Version 4
SHEET 1 880 680
WIRE -416 -688 -672 -688
WIRE -672 -624 -672 -688
WIRE -416 -560 -416 -688
WIRE -32 -560 -416 -560
WIRE 800 -560 -32 -560
WIRE -416 -496 -416 -560
WIRE -672 -448 -672 -544
WIRE -416 -352 -416 -416
WIRE -416 -352 -528 -352
WIRE -304 -352 -416 -352
WIRE -112 -352 -304 -352
WIRE -528 -272 -528 -352
WIRE -304 -272 -304 -352
WIRE -32 -240 -32 -560
WIRE 448 -240 -32 -240
WIRE 800 -240 800 -560
WIRE -528 -128 -528 -208
WIRE -304 -128 -304 -208
WIRE -32 -112 -32 -240
WIRE 64 -112 -32 -112
WIRE 384 -112 288 -112
WIRE 800 -96 800 -160
WIRE -112 -48 -112 -352
WIRE 64 -48 -112 -48
WIRE 336 -48 288 -48
WIRE 800 -32 800 -96
WIRE -528 -16 -528 -48
WIRE -400 -16 -528 -16
WIRE -304 -16 -304 -48
WIRE -304 -16 -400 -16
WIRE -400 16 -400 -16
WIRE -64 16 -400 16
WIRE 64 16 -64 16
WIRE 528 16 288 16
WIRE 736 16 608 16
WIRE 64 80 0 80
WIRE 448 80 448 -240
WIRE 448 80 288 80
WIRE -400 96 -400 16
WIRE 0 112 0 80
WIRE 800 128 800 64
WIRE -64 192 -64 16
WIRE 336 192 336 -48
WIRE 336 192 -64 192
WIRE -400 208 -400 160
WIRE 384 240 384 -112
WIRE 0 304 0 176
FLAG 800 128 0
FLAG 384 240 0
FLAG -400 208 0
FLAG 0 304 0
FLAG -672 -448 0
FLAG 800 -96 Vm
SYMBOL Misc\\NE555 176 -16 M0
SYMATTR InstName U2
SYMBOL res 624 0 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 33
SYMBOL npn 736 -32 R0
SYMATTR InstName Q1
SYMBOL res 784 -256 R0
SYMATTR InstName R4
SYMATTR Value 20
SYMBOL cap -416 96 R0
SYMATTR InstName C1
SYMATTR Value .0000001
SYMBOL diode -544 -272 R0
SYMATTR InstName D1
SYMBOL diode -288 -208 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMBOL res -544 -144 R0
SYMATTR InstName R11
SYMATTR Value 25000
SYMBOL res -320 -144 R0
SYMATTR InstName R12
SYMATTR Value 25000
SYMBOL res -432 -512 R0
SYMATTR InstName R2
SYMATTR Value 1000
SYMBOL cap -16 112 R0
SYMATTR InstName C2
SYMATTR Value .00000001
SYMBOL voltage -672 -640 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 44 Left 2
SYMATTR InstName V1
SYMATTR Value 12
SYMATTR SpiceLine Rser=0
TEXT -706 328 Left 2 !.tran 0 0.01 0