Version 4 SHEET 1 1348 680 WIRE -832 -448 -1008 -448 WIRE -720 -448 -752 -448 WIRE -640 -448 -720 -448 WIRE -640 -320 -640 -368 WIRE -720 -256 -720 -448 WIRE -720 -256 -880 -256 WIRE -640 -224 -640 -240 WIRE -640 -224 -912 -224 WIRE -528 -224 -640 -224 WIRE -640 -208 -640 -224 WIRE -224 -64 -336 -64 WIRE -1008 16 -1008 -448 WIRE -1008 16 -1136 16 WIRE -848 16 -1008 16 WIRE 480 32 464 32 WIRE 704 32 560 32 WIRE 176 48 128 48 WIRE 336 48 240 48 WIRE -880 80 -880 -256 WIRE -848 80 -880 80 WIRE -528 80 -528 -224 WIRE -528 80 -624 80 WIRE 880 80 864 80 WIRE 1040 80 960 80 WIRE -912 144 -912 -224 WIRE -848 144 -912 144 WIRE -256 144 -624 144 WIRE -80 160 -192 160 WIRE 16 160 0 160 WIRE 128 160 128 48 WIRE 128 160 16 160 WIRE 176 160 128 160 WIRE -336 176 -336 -64 WIRE -256 176 -336 176 WIRE 336 176 336 48 WIRE 336 176 240 176 WIRE 368 176 336 176 WIRE 464 176 464 32 WIRE 464 176 448 176 WIRE 496 176 464 176 WIRE 176 192 112 192 WIRE 704 192 704 32 WIRE 704 192 560 192 WIRE 768 192 704 192 WIRE 864 192 864 80 WIRE 864 192 848 192 WIRE 880 192 864 192 WIRE -848 208 -912 208 WIRE -832 208 -848 208 WIRE -560 208 -624 208 WIRE 496 208 448 208 WIRE 1040 208 1040 80 WIRE 1040 208 944 208 WIRE 1088 208 1040 208 WIRE 1136 208 1088 208 WIRE 832 224 784 224 WIRE 880 224 832 224 WIRE 112 240 112 192 WIRE 448 256 448 208 WIRE 832 256 832 224 WIRE -1008 320 -1008 16 WIRE -560 320 -560 208 WIRE -560 320 -1008 320 WIRE 832 352 832 336 WIRE -224 416 -288 416 WIRE -176 416 -224 416 WIRE -224 432 -224 416 FLAG 112 240 0 FLAG -288 336 V+ IOPIN -288 336 Out FLAG 208 144 V+ IOPIN 208 144 In FLAG 208 208 V- IOPIN 208 208 In FLAG -176 336 V- IOPIN -176 336 Out FLAG -224 432 0 FLAG 912 240 V- IOPIN 912 240 In FLAG 912 176 V+ IOPIN 912 176 In FLAG 832 352 0 FLAG 448 256 0 FLAG 528 224 V- IOPIN 528 224 In FLAG 528 160 V+ IOPIN 528 160 In FLAG 704 224 V+ IOPIN 704 224 Out FLAG -1136 16 V+ IOPIN -1136 16 In FLAG -640 -144 0 FLAG -912 272 0 FLAG -624 16 0 FLAG 16 160 Vin FLAG 1088 208 Vout FLAG -224 -144 V+ IOPIN -224 -144 Out FLAG -224 0 0 FLAG -224 128 V- IOPIN -224 128 In FLAG -224 192 V+ IOPIN -224 192 In SYMBOL polcap 176 64 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 WINDOW 40 102 32 VBottom 2 SYMATTR InstName C1 SYMATTR Value 220µ SYMATTR SpiceLine2 IC=0 V SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=35 Irms=760m Rser=0.09 Lser=0 mfg="Panasonic" pn="ECA1VFQ221" type="Al electrolytic" SYMBOL res 16 144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 200k SYMBOL Misc\\signal -288 320 R0 WINDOW 3 -90 46 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value 15 SYMATTR InstName V+ SYMBOL Misc\\signal -176 320 R0 WINDOW 3 56 49 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value -15 SYMATTR InstName V- SYMBOL res 800 208 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 200k SYMBOL res 848 352 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R3 SYMATTR Value 200k SYMBOL res 752 208 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R4 SYMATTR Value 200k SYMBOL res 864 96 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R5 SYMATTR Value 200k SYMBOL res 464 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 200k SYMBOL res 576 16 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 200k SYMBOL Misc\\NE555 -736 112 M0 SYMATTR InstName U4 SYMBOL res -656 -464 R0 SYMATTR InstName R8 SYMATTR Value 3k SYMBOL res -656 -336 R0 SYMATTR InstName R9 SYMATTR Value 0.8Meg SYMBOL res -736 -464 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 200 SYMBOL cap -656 -208 R0 SYMATTR InstName C2 SYMATTR Value 220µ SYMBOL cap -928 208 R0 SYMATTR InstName C3 SYMATTR Value 10n SYMBOL Opamps\\LT1012 208 112 R0 SYMATTR InstName U1 SYMBOL Opamps\\LT1012 528 128 R0 SYMATTR InstName U2 SYMBOL Opamps\\LT1012 912 144 R0 SYMATTR InstName U3 SYMBOL Opamps\\LT1007A -224 224 M180 SYMATTR InstName U5 SYMBOL zener -208 0 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value 1N750 SYMBOL res -240 -160 R0 SYMATTR InstName R11 SYMATTR Value 100k TEXT -256 456 Left 2 !.tran 2000