Version 4
SHEET 1 880 680
WIRE 48 -80 -160 -80
WIRE 96 -80 48 -80
WIRE 368 -80 176 -80
WIRE 368 -64 368 -80
WIRE 48 -48 48 -80
WIRE -16 0 -32 0
WIRE 368 16 368 0
WIRE 368 16 336 16
WIRE -32 32 -32 0
WIRE 336 48 336 16
WIRE 368 48 336 48
WIRE 368 64 368 48
WIRE -32 144 -32 112
WIRE 48 144 48 48
WIRE 48 144 -32 144
WIRE 64 144 48 144
WIRE 176 144 128 144
WIRE 368 144 368 128
WIRE 368 144 256 144
WIRE 624 144 368 144
WIRE 48 176 48 144
WIRE 96 176 48 176
WIRE 368 176 176 176
WIRE 528 176 368 176
WIRE 368 192 368 176
WIRE -160 208 -160 -80
WIRE -32 208 -32 144
WIRE 528 224 528 176
WIRE 368 272 368 256
WIRE 368 272 336 272
WIRE 624 272 624 224
WIRE 624 272 592 272
WIRE 336 304 336 272
WIRE 368 304 336 304
WIRE 368 320 368 304
WIRE 368 400 368 384
WIRE 368 400 336 400
WIRE 336 432 336 400
WIRE 368 432 336 432
WIRE 368 448 368 432
WIRE -160 528 -160 288
WIRE -32 528 -32 288
WIRE -32 528 -160 528
WIRE 368 528 368 512
WIRE 368 528 -32 528
WIRE 528 528 528 320
WIRE 528 528 368 528
WIRE -160 544 -160 528
FLAG -160 544 0
SYMBOL voltage -160 192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 24
SYMBOL LED 352 -64 R0
SYMATTR InstName D5
SYMATTR Value QTLP690C
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LED 352 64 R0
SYMATTR InstName D6
SYMATTR Value QTLP690C
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LED 352 192 R0
SYMATTR InstName D7
SYMATTR Value QTLP690C
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LED 352 320 R0
SYMATTR InstName D8
SYMATTR Value QTLP690C
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LED 352 448 R0
SYMATTR InstName D9
SYMATTR Value QTLP690C
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL voltage -32 192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 24 1 0.01 .01 1 2 10)
SYMBOL npn -16 -48 R0
SYMATTR InstName Q1
SYMBOL npn 592 320 R180
SYMATTR InstName Q2
SYMBOL res 80 -96 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 700
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res 160 128 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 700
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res 80 160 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1270
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res -48 128 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 700
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res 608 240 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R5
SYMATTR Value 50000
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL diode 128 128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
TEXT -176 64 Left 2 !.tran 20
TEXT -16 352 Left 2 !;tran 20