Version 4
SHEET 1 880 680
WIRE 96 16 -128 16
WIRE 272 16 96 16
WIRE -128 48 -128 16
WIRE 96 48 96 16
WIRE -128 144 -128 128
WIRE 96 144 96 128
WIRE 272 240 272 16
WIRE -496 256 -544 256
WIRE -64 256 -416 256
WIRE 0 256 -64 256
WIRE -64 272 -64 256
WIRE -544 352 -544 256
WIRE -544 352 -688 352
WIRE -128 352 -128 208
WIRE -64 352 -64 336
WIRE -64 352 -128 352
WIRE -128 384 -128 352
WIRE 96 384 96 208
WIRE -688 416 -688 352
WIRE -544 432 -544 352
WIRE -496 432 -544 432
WIRE -368 432 -416 432
WIRE -240 432 -304 432
WIRE -192 432 -240 432
WIRE 0 432 0 256
WIRE 32 432 0 432
WIRE -240 448 -240 432
WIRE -688 560 -688 496
WIRE -240 560 -240 528
WIRE -240 560 -688 560
WIRE -128 560 -128 480
WIRE -128 560 -240 560
WIRE 96 560 96 480
WIRE 96 560 -128 560
WIRE 272 560 272 320
WIRE 272 560 96 560
WIRE 272 576 272 560
FLAG 272 576 0
SYMBOL voltage 272 224 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL LED -144 144 R0
SYMATTR InstName D1
SYMATTR Value NSCW100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LED 80 144 R0
SYMATTR InstName D2
SYMATTR Value NSCW100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -144 32 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res 80 32 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL npn -192 384 R0
SYMATTR InstName Q1
SYMATTR Value 2N2222
SYMBOL npn 32 384 R0
SYMATTR InstName Q2
SYMATTR Value 2N2222
SYMBOL schottky -80 272 R0
SYMATTR InstName D3
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL zener -304 416 R90
WINDOW 0 -4 32 VBottom 2
WINDOW 3 36 32 VTop 2
SYMATTR InstName D4
SYMATTR Value 1N750
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -400 240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res -400 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL res -256 432 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL voltage -688 400 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 0
TEXT -620 104 Left 2 !.dc V2 0 12 .05