Version 4
SHEET 1 2664 1416
WIRE 96 816 96 496
WIRE 96 880 96 912
WIRE 96 912 0 912
WIRE -112 400 -112 368
WIRE -112 368 -176 368
WIRE -240 368 -240 400
WIRE 288 128 96 128
WIRE -176 128 -176 160
WIRE -176 240 -176 368
WIRE -176 368 -240 368
WIRE -48 448 0 448
WIRE -176 128 -528 128
WIRE -528 128 -528 160
WIRE -528 240 -528 368
WIRE -528 880 -528 912
WIRE -528 912 -400 912
WIRE -240 720 -64 720
WIRE -240 496 -240 720
WIRE -304 448 -400 448
WIRE -528 448 -528 800
WIRE -112 496 -112 912
WIRE -112 912 0 912
WIRE -528 128 -656 128
WIRE -656 128 -656 800
WIRE -656 880 -656 912
WIRE -656 912 -528 912
WIRE -656 944 -656 912
WIRE 0 672 0 448
WIRE 0 768 0 800
WIRE 0 880 0 912
WIRE -336 720 -240 720
WIRE -240 800 -240 720
WIRE -240 880 -240 912
WIRE -240 912 -112 912
WIRE -400 800 -400 768
WIRE -400 880 -400 912
WIRE -400 912 -240 912
WIRE -480 368 -528 368
WIRE -528 368 -528 448
WIRE 96 448 0 448
WIRE 96 160 96 128
WIRE 96 128 -176 128
WIRE 288 160 288 128
WIRE 288 240 288 272
WIRE 96 240 96 272
WIRE 160 320 192 320
WIRE 192 320 192 400
WIRE 192 320 224 320
WIRE 192 400 288 400
WIRE 288 400 288 368
WIRE 96 368 96 448
WIRE 288 400 288 800
WIRE 288 880 288 912
WIRE 288 912 96 912
WIRE 144 496 96 496
WIRE 96 496 96 448
WIRE 560 400 560 368
WIRE 560 368 496 368
WIRE 432 368 432 400
WIRE 496 128 496 160
WIRE 496 240 496 368
WIRE 496 368 432 368
WIRE 432 496 432 912
WIRE 288 912 432 912
WIRE 672 768 672 912
WIRE 560 880 560 912
WIRE 288 128 496 128
WIRE 368 448 96 448
WIRE 672 128 672 160
WIRE 496 128 672 128
WIRE 672 672 672 496
WIRE 624 448 800 448
WIRE 800 448 800 800
WIRE 800 880 800 912
WIRE 800 912 672 912
WIRE 832 496 672 496
WIRE 672 496 672 240
WIRE 432 912 560 912
WIRE 560 912 672 912
WIRE 560 496 560 720
WIRE 608 720 560 720
WIRE 560 720 560 800
WIRE -400 528 -400 448
WIRE -400 448 -528 448
WIRE -400 608 -400 672
FLAG -656 944 0
FLAG -480 368 REF
IOPIN -480 368 Out
FLAG 144 496 RAMP
IOPIN 144 496 Out
FLAG 832 496 PWM
IOPIN 832 496 Out
SYMBOL cap 80 816 R0
WINDOW 0 39 23 Left 0
WINDOW 3 36 46 Left 0
SYMATTR InstName C1
SYMATTR Value 220p
SYMBOL pnp -48 496 R180
WINDOW 0 76 57 Left 0
WINDOW 3 23 36 Left 0
SYMATTR InstName Q3
SYMATTR Value 2N2907
SYMBOL pnp -304 496 M180
WINDOW 0 48 58 Left 0
WINDOW 3 44 36 Left 0
SYMATTR InstName Q4
SYMATTR Value 2N2907
SYMBOL res -192 144 R0
WINDOW 0 36 49 Left 0
WINDOW 3 38 70 Left 0
SYMATTR InstName R6
SYMATTR Value 10K
SYMBOL res -544 144 R0
WINDOW 0 -47 42 Left 0
WINDOW 3 -46 64 Left 0
SYMATTR InstName R7
SYMATTR Value 7K
SYMBOL res -544 784 R0
WINDOW 0 -51 35 Left 0
WINDOW 3 -51 59 Left 0
SYMATTR InstName R8
SYMATTR Value 5K
SYMBOL voltage -656 784 R0
WINDOW 0 -71 45 Left 0
WINDOW 3 -69 69 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 12V
SYMBOL npn -64 672 R0
SYMATTR InstName Q1
SYMATTR Value 2N2222
SYMBOL res -16 784 R0
WINDOW 0 -50 41 Left 0
WINDOW 3 -52 67 Left 0
SYMATTR InstName R1
SYMATTR Value 100R
SYMBOL npn -336 672 M0
WINDOW 0 80 35 Left 0
WINDOW 3 32 59 Left 0
SYMATTR InstName Q2
SYMATTR Value 2N2222
SYMBOL res -256 784 R0
WINDOW 0 37 42 Left 0
WINDOW 3 36 66 Left 0
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL res -416 784 R0
WINDOW 0 -59 38 Left 0
WINDOW 3 -62 63 Left 0
SYMATTR InstName R4
SYMATTR Value 100R
SYMBOL pnp 224 368 M180
WINDOW 0 41 56 Left 0
WINDOW 3 40 32 Left 0
SYMATTR InstName Q5
SYMATTR Value 2N2907
SYMBOL pnp 160 368 R180
WINDOW 0 76 57 Left 0
WINDOW 3 23 36 Left 0
SYMATTR InstName Q6
SYMATTR Value 2N2907
SYMBOL res 80 144 R0
WINDOW 0 37 48 Left 0
WINDOW 3 36 70 Left 0
SYMATTR InstName R5
SYMATTR Value 1K
SYMBOL res 272 144 R0
WINDOW 0 36 52 Left 0
SYMATTR InstName R9
SYMATTR Value 1K
SYMBOL res 272 784 R0
WINDOW 0 39 53 Left 0
SYMATTR InstName R10
SYMATTR Value 200K
SYMBOL pnp 624 496 R180
WINDOW 0 76 57 Left 0
WINDOW 3 23 36 Left 0
SYMATTR InstName Q7
SYMATTR Value 2N2907
SYMBOL pnp 368 496 M180
WINDOW 0 41 56 Left 0
WINDOW 3 40 32 Left 0
SYMATTR InstName Q8
SYMATTR Value 2N2907
SYMBOL res 480 144 R0
WINDOW 0 36 49 Left 0
WINDOW 3 38 70 Left 0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL npn 608 672 R0
SYMATTR InstName Q9
SYMATTR Value 2N2222
SYMBOL res 544 784 R0
WINDOW 0 37 49 Left 0
SYMATTR InstName R12
SYMATTR Value 2K2
SYMBOL res 656 144 R0
WINDOW 0 36 49 Left 0
WINDOW 3 38 70 Left 0
SYMATTR InstName R13
SYMATTR Value 10K
SYMBOL voltage 800 784 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 0 2m 0 1)
SYMBOL res -416 512 R0
WINDOW 0 -49 45 Left 0
WINDOW 3 -54 67 Left 0
SYMATTR InstName R11
SYMATTR Value 470R
TEXT -664 1016 Left 0 !.tran 0 2m 1u uic
TEXT -664 992 Left 0 !.MODEL DID D(Ron=0)