Version 4 SHEET 1 880 680 WIRE 288 -96 -176 -96 WIRE -32 -32 -80 -32 WIRE 64 -32 48 -32 WIRE 192 -16 176 -16 WIRE 288 -16 288 -96 WIRE 288 -16 256 -16 WIRE -304 48 -352 48 WIRE 0 48 -224 48 WIRE 224 48 0 48 WIRE 416 48 224 48 WIRE 0 96 0 48 WIRE 224 96 224 48 WIRE 416 96 416 48 WIRE -32 112 -64 112 WIRE 176 112 176 -16 WIRE 192 112 176 112 WIRE 384 112 352 112 WIRE 64 128 64 -32 WIRE 64 128 32 128 WIRE 80 128 64 128 WIRE 176 128 176 112 WIRE 176 128 160 128 WIRE 288 128 288 -16 WIRE 288 128 256 128 WIRE 336 128 288 128 WIRE 592 128 448 128 WIRE -176 144 -176 -96 WIRE -160 144 -176 144 WIRE -80 144 -80 -32 WIRE -32 144 -80 144 WIRE 192 144 160 144 WIRE 336 144 336 128 WIRE 384 144 336 144 WIRE 160 208 160 144 WIRE -304 272 -352 272 WIRE 0 272 0 160 WIRE 0 272 -224 272 WIRE 224 272 224 160 WIRE 224 272 0 272 WIRE 416 272 416 160 WIRE 416 272 224 272 WIRE -64 288 -64 112 WIRE 352 288 352 112 WIRE -64 400 -64 368 WIRE 352 400 352 368 FLAG -352 48 0 FLAG -352 272 0 FLAG -64 400 0 FLAG 160 208 0 FLAG 592 208 0 FLAG 352 400 0 SYMBOL res 64 -48 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL res 176 112 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1k SYMBOL res -64 128 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 1k SYMBOL voltage -208 48 R90 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL voltage -320 272 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 -32 56 VBottom 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 5 SYMBOL voltage -64 272 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value 0 SYMBOL cap 256 -32 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL res 576 112 R0 SYMATTR InstName R4 SYMATTR Value 1k SYMBOL Opamps\\LT1797 0 64 R0 SYMATTR InstName U1 SYMBOL Opamps\\LT1797 224 64 R0 SYMATTR InstName U2 SYMBOL Opamps\\LT1797 416 64 R0 SYMATTR InstName U3 SYMBOL voltage 352 272 R0 SYMATTR InstName V4 SYMATTR Value {Vadj} TEXT -372 424 Left 2 !.tran 10ms TEXT 32 424 Left 2 !.step param Vadj 0 .1 0.02