Version 4
SHEET 1 1088 680
WIRE 240 -192 128 -192
WIRE 368 -192 240 -192
WIRE 624 -192 368 -192
WIRE 720 -192 624 -192
WIRE 816 -192 720 -192
WIRE 128 -160 128 -192
WIRE 240 -160 240 -192
WIRE 368 -160 368 -192
WIRE 624 -160 624 -192
WIRE 720 -160 720 -192
WIRE -64 -112 -80 -112
WIRE -80 -96 -80 -112
WIRE 720 -48 720 -80
WIRE 624 0 624 -80
WIRE 624 0 592 0
WIRE 656 0 624 0
WIRE 368 48 368 -80
WIRE 368 48 336 48
WIRE 400 48 368 48
WIRE 496 48 464 48
WIRE 528 48 496 48
WIRE 720 80 720 48
WIRE 240 96 240 -80
WIRE 240 96 208 96
WIRE 272 96 240 96
WIRE 0 144 -240 144
WIRE 48 144 0 144
WIRE 128 144 128 -80
WIRE 128 144 112 144
WIRE 144 144 128 144
WIRE 0 192 0 144
WIRE 336 192 336 144
WIRE 336 192 208 192
WIRE 720 192 720 144
WIRE 816 192 720 192
WIRE 720 224 720 192
WIRE 592 272 592 96
WIRE 656 272 592 272
WIRE 336 304 336 192
WIRE 496 304 496 48
WIRE 592 304 592 272
WIRE -240 368 -240 144
WIRE 0 416 0 256
WIRE 336 416 336 384
WIRE 336 416 0 416
WIRE 496 416 496 384
WIRE 496 416 336 416
WIRE 592 416 592 384
WIRE 592 416 496 416
WIRE 720 416 720 320
WIRE 720 416 592 416
WIRE 720 464 720 416
FLAG 816 192 out
IOPIN 816 192 Out
FLAG 816 -192 VCC
FLAG 720 464 0
FLAG -80 -16 0
FLAG -80 -112 VCC
FLAG -240 448 0
FLAG -240 144 in
SYMBOL diode 16 256 R180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 112 128 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL npn 144 96 R0
SYMATTR InstName Q1
SYMATTR Value 2N2222
SYMBOL npn 272 48 R0
SYMATTR InstName Q2
SYMATTR Value 2N2222
SYMBOL diode 400 64 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL npn 528 0 R0
SYMATTR InstName Q3
SYMATTR Value 2N2222
SYMBOL npn 656 -48 R0
SYMATTR InstName Q4
SYMATTR Value 2N2222
SYMBOL diode 704 80 R0
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL npn 656 224 R0
SYMATTR InstName Q5
SYMATTR Value 2N2222
SYMBOL res 112 -176 R0
SYMATTR InstName R1
SYMATTR Value 6.8k
SYMBOL res 224 -176 R0
SYMATTR InstName R2
SYMATTR Value 2.2k
SYMBOL res 480 288 R0
SYMATTR InstName R5
SYMATTR Value 3.3k
SYMBOL res 576 288 R0
SYMATTR InstName R6
SYMATTR Value 1k
SYMBOL res 608 -176 R0
SYMATTR InstName R7
SYMATTR Value 1.5k
SYMBOL res 320 288 R0
SYMATTR InstName R3
SYMATTR Value 470
SYMBOL res 352 -176 R0
SYMATTR InstName R4
SYMATTR Value 1.5k
SYMBOL res 704 -176 R0
SYMATTR InstName R8
SYMATTR Value 100
SYMBOL voltage -80 -112 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5V
SYMBOL voltage -240 352 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(0V 5V 0s 1s 1s 0s)
TEXT 96 456 Left 0 !.tran 0 2s 0