Version 4 SHEET 1 1060 748 WIRE -128 -432 -192 -432 WIRE -48 -432 -128 -432 WIRE 208 -432 -48 -432 WIRE -128 -384 -128 -432 WIRE 384 -384 48 -384 WIRE -192 -336 -192 -432 WIRE -48 -336 -48 -432 WIRE -16 -336 -48 -336 WIRE 736 -288 544 -288 WIRE -32 -208 -128 -208 WIRE 48 -208 -32 -208 WIRE 384 -160 384 -384 WIRE 544 -160 544 -208 WIRE 544 -160 384 -160 WIRE 560 -160 544 -160 WIRE -384 -144 -384 -160 WIRE -384 -144 -416 -144 WIRE -416 -128 -416 -144 WIRE -384 -128 -384 -144 WIRE 736 -112 736 -288 WIRE 736 -112 720 -112 WIRE 560 -64 528 -64 WIRE 528 -32 528 -64 WIRE 208 -16 208 -432 WIRE 384 -16 384 -160 WIRE 96 32 -160 32 WIRE 144 32 96 32 WIRE 320 32 304 32 WIRE 304 64 304 32 WIRE 208 128 208 80 WIRE 256 128 208 128 WIRE 384 128 384 80 WIRE 400 128 384 128 WIRE -160 144 -160 112 WIRE -160 144 -320 144 WIRE -96 144 -160 144 WIRE -320 192 -320 144 WIRE 96 192 96 32 WIRE 96 192 64 192 WIRE 256 208 256 128 WIRE 400 208 400 128 WIRE -96 240 -144 240 WIRE -144 272 -144 240 WIRE 256 320 256 288 WIRE 352 320 256 320 WIRE 400 320 400 288 WIRE 400 320 352 320 WIRE 576 320 576 304 WIRE -320 336 -320 272 WIRE 352 368 352 320 WIRE -320 448 -320 416 FLAG -416 -128 0 FLAG 304 64 0 FLAG -320 448 0 FLAG -384 -240 V+ FLAG -384 -48 V- FLAG -32 -208 V+ FLAG 352 448 V- FLAG 576 320 0 FLAG 576 224 Vs FLAG 640 -176 v+ FLAG 640 -48 v- FLAG 528 -32 0 FLAG 736 -112 vout FLAG -16 128 v+ FLAG -16 256 v- FLAG -144 272 0 SYMBOL res 240 192 R0 SYMATTR InstName R2 SYMATTR Value 68 SYMBOL res 384 192 R0 SYMATTR InstName R3 SYMATTR Value 68 SYMBOL voltage -384 -256 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL voltage -384 -144 R0 SYMATTR InstName V2 SYMATTR Value 12 SYMBOL npn 144 -16 R0 SYMATTR InstName Q1 SYMBOL npn 320 -16 R0 SYMATTR InstName Q2 SYMBOL res -144 -304 R0 SYMATTR InstName R7 SYMATTR Value 10k SYMBOL res 32 -304 R0 SYMATTR InstName R8 SYMATTR Value 10k SYMBOL voltage -320 320 R0 SYMATTR InstName V3 SYMATTR Value PULSE(-5 5 0 1m 1m 0m 2m) SYMBOL voltage 576 208 R0 SYMATTR InstName V4 SYMATTR Value SINE(0 5 500 -1.5m) SYMBOL res 336 352 R0 SYMATTR InstName R4 SYMATTR Value 10K SYMBOL res -176 16 R0 SYMATTR InstName R5 SYMATTR Value 22K SYMBOL res -336 176 R0 SYMATTR InstName R6 SYMATTR Value 560K SYMBOL tl072/tl07x 624 -112 R0 SYMATTR InstName U3 SYMBOL pnp -192 -384 R0 SYMATTR InstName Q3 SYMBOL pnp -16 -384 R0 SYMATTR InstName Q4 SYMBOL res 528 -304 R0 SYMATTR InstName R1 SYMATTR Value 4.8K SYMBOL tl072/tl07x -32 192 R0 SYMATTR InstName U1 TEXT -144 -104 Left 2 !.tran 10m\n.lib opamp.sub