Version 4 SHEET 1 1536 940 WIRE -944 224 -944 -208 WIRE -944 672 -944 304 WIRE -800 544 -800 384 WIRE -800 672 -944 672 WIRE -800 672 -800 624 WIRE -704 512 -704 416 WIRE -672 384 -800 384 WIRE -672 416 -704 416 WIRE -656 176 -656 160 WIRE -656 272 -656 256 WIRE -640 368 -640 336 WIRE -640 464 -640 432 WIRE -576 160 -656 160 WIRE -576 192 -576 160 WIRE -576 272 -656 272 WIRE -576 272 -576 256 WIRE -576 400 -608 400 WIRE -576 400 -576 272 WIRE -560 400 -576 400 WIRE -560 416 -560 400 WIRE -560 512 -704 512 WIRE -560 512 -560 496 WIRE -480 272 -576 272 WIRE -480 288 -480 272 WIRE -480 512 -560 512 WIRE -480 512 -480 432 WIRE -432 -208 -944 -208 WIRE -432 -208 -432 -240 WIRE -432 672 -800 672 WIRE -432 736 -432 672 WIRE -368 544 -368 384 WIRE -368 672 -432 672 WIRE -368 672 -368 624 WIRE -336 672 -368 672 WIRE -336 704 -336 672 WIRE -336 832 -336 784 WIRE -304 560 -304 416 WIRE -288 384 -368 384 WIRE -288 416 -304 416 WIRE -256 368 -256 336 WIRE -256 464 -256 432 WIRE -192 160 -576 160 WIRE -192 176 -192 160 WIRE -192 272 -192 256 WIRE -192 336 -192 272 WIRE -192 400 -224 400 WIRE -192 400 -192 336 WIRE -192 416 -192 400 WIRE -192 560 -304 560 WIRE -192 560 -192 496 WIRE -112 160 -192 160 WIRE -112 192 -112 160 WIRE -112 272 -192 272 WIRE -112 272 -112 256 WIRE -96 560 -192 560 WIRE -80 336 -192 336 WIRE -80 352 -80 336 WIRE -80 496 -192 496 WIRE -48 160 -112 160 WIRE -48 160 -48 128 WIRE 0 256 0 224 WIRE 0 368 0 336 WIRE 0 400 0 368 WIRE 0 672 -336 672 WIRE 0 672 0 480 WIRE 16 96 16 -32 WIRE 48 96 16 96 WIRE 48 128 -48 128 WIRE 80 80 80 48 WIRE 80 176 80 144 WIRE 80 416 80 400 WIRE 80 560 -16 560 WIRE 80 560 80 496 WIRE 144 -32 16 -32 WIRE 144 112 112 112 WIRE 144 112 144 -32 WIRE 176 400 80 400 WIRE 176 416 176 400 WIRE 176 512 -400 512 WIRE 176 512 176 496 WIRE 224 368 0 368 WIRE 224 400 176 400 WIRE 256 112 144 112 WIRE 256 112 256 96 WIRE 256 176 256 112 WIRE 256 352 256 320 WIRE 256 448 256 416 WIRE 320 224 0 224 WIRE 320 320 320 224 WIRE 336 384 288 384 WIRE 336 512 176 512 WIRE 336 512 336 384 WIRE 352 96 256 96 WIRE 368 176 320 176 WIRE 368 480 368 176 WIRE 416 160 416 144 WIRE 416 208 416 160 WIRE 416 320 320 320 WIRE 416 320 416 288 WIRE 416 480 368 480 WIRE 480 320 416 320 WIRE 480 336 480 320 WIRE 480 432 480 416 WIRE 480 672 0 672 WIRE 480 672 480 528 WIRE 496 160 416 160 WIRE 560 -208 -432 -208 WIRE 560 48 416 48 WIRE 560 48 560 -16 WIRE 560 112 560 48 WIRE 560 320 480 320 WIRE 560 320 560 208 WIRE 560 368 560 320 WIRE 560 560 80 560 WIRE 560 560 560 448 WIRE 560 592 560 560 WIRE 560 672 480 672 WIRE 560 672 560 656 WIRE 624 560 560 560 WIRE 784 560 704 560 WIRE 784 576 784 560 WIRE 784 672 560 672 WIRE 784 672 784 656 WIRE 1024 -16 560 -16 WIRE 1024 336 1024 -16 WIRE 1024 464 1024 416 FLAG -432 736 0 FLAG 80 176 -5V FLAG 256 320 -5V FLAG -336 832 -5V FLAG -432 -240 +24 FLAG 256 448 +24 FLAG 80 48 +24 FLAG -256 336 -5V FLAG -256 464 +24 FLAG -640 336 -5V FLAG -640 464 +24 FLAG 1024 464 0 SYMBOL Opamps\\LT1001A 80 48 R0 SYMATTR InstName U1 SYMBOL npn 496 112 R0 SYMATTR InstName Q1 SYMATTR Value 2N3055 SYMBOL npn 352 48 R0 SYMATTR InstName Q2 SYMATTR Value 2N2222 SYMBOL res 400 192 R0 SYMATTR InstName R1 SYMATTR Value 100 SYMBOL voltage -944 208 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 132 Left 0 SYMATTR SpiceLine Rser=0.1 SYMATTR InstName V1 SYMATTR Value 24 SYMBOL res 544 352 R0 SYMATTR InstName R2 SYMATTR Value 0.47 SYMBOL Opamps\\LT1001A 256 448 M180 SYMATTR InstName U2 SYMBOL res 160 400 R0 SYMATTR InstName R3 SYMATTR Value 10k SYMBOL res 64 400 R0 SYMATTR InstName R4 SYMATTR Value 1k SYMBOL res -16 384 R0 SYMATTR InstName R5 SYMATTR Value 10k SYMBOL res -16 240 R0 SYMATTR InstName R6 SYMATTR Value 1k SYMBOL voltage -336 688 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 132 Left 0 SYMATTR SpiceLine Rser=0.1 SYMATTR InstName V2 SYMATTR Value 5 SYMBOL Opamps\\LT1001A -256 464 M180 WINDOW 3 -97 111 Left 0 SYMATTR InstName U3 SYMBOL voltage -368 528 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 132 Left 0 SYMATTR SpiceLine Rser=1 SYMATTR InstName V3 SYMATTR Value 3 SYMBOL diode -128 192 R0 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL res -208 160 R0 SYMATTR InstName R7 SYMATTR Value 10k SYMBOL Opamps\\LT1001A -640 464 M180 SYMATTR InstName U4 SYMBOL voltage -800 528 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 132 Left 0 SYMATTR SpiceLine Rser=1 SYMATTR InstName V4 SYMATTR Value 10 SYMBOL diode -592 192 R0 SYMATTR InstName D3 SYMATTR Value 1N4148 SYMBOL res -672 160 R0 SYMATTR InstName R8 SYMATTR Value 10k SYMBOL res -576 400 R0 SYMATTR InstName R9 SYMATTR Value 10000k SYMBOL res -384 496 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R10 SYMATTR Value 1k SYMBOL res -208 400 R0 SYMATTR InstName R11 SYMATTR Value 10000k SYMBOL res 0 544 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R12 SYMATTR Value 1k SYMBOL cap 544 592 R0 SYMATTR InstName C1 SYMATTR Value 22µ SYMATTR SpiceLine Rser=0.03 SYMBOL cap -496 368 R0 SYMATTR InstName C2 SYMATTR Value 10n SYMATTR SpiceLine Rser=0.1 SYMBOL res -496 272 R0 SYMATTR InstName R14 SYMATTR Value 470 SYMBOL cap -96 432 R0 SYMATTR InstName C3 SYMATTR Value 10n SYMATTR SpiceLine Rser=0.1 SYMBOL res -96 336 R0 SYMATTR InstName R15 SYMATTR Value 10k SYMBOL pnp 416 528 M180 SYMATTR InstName Q3 SYMATTR Value 2N3906 SYMBOL res 464 320 R0 SYMATTR InstName R16 SYMATTR Value 10 SYMBOL diode 320 160 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D5 SYMATTR Value 1N4148 SYMBOL res 720 544 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R13 SYMATTR Value 0.1 SYMBOL voltage 1024 320 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 132 Left 0 SYMATTR InstName V6 SYMATTR Value PULSE(12 5 2m 10n 10n 10m 40m 10) SYMATTR SpiceLine Rser=0.1 SYMBOL current 784 576 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I1 SYMATTR Value 1 TEXT -466 922 Left 0 !.tran 0 200m 0 1µ startup