Version 4 SHEET 1 880 680 WIRE 224 -64 208 -64 WIRE 320 -64 304 -64 WIRE 176 -32 -224 -32 WIRE 176 0 176 -32 WIRE 272 0 176 0 WIRE 272 16 272 0 WIRE 64 32 -16 32 WIRE 208 32 208 -64 WIRE 208 32 144 32 WIRE 240 32 208 32 WIRE 320 48 320 -64 WIRE 320 48 304 48 WIRE 384 48 320 48 WIRE 496 48 464 48 WIRE 240 64 208 64 WIRE -224 80 -224 48 WIRE 208 96 208 64 WIRE 272 112 272 80 WIRE -16 144 -16 32 WIRE -16 144 -224 144 WIRE 496 144 496 48 WIRE 576 144 496 144 WIRE -224 160 -224 144 WIRE 320 208 224 208 WIRE 176 224 176 0 WIRE 272 224 176 224 WIRE 272 240 272 224 WIRE 224 256 224 208 WIRE 240 256 224 256 WIRE 320 272 320 208 WIRE 320 272 304 272 WIRE 384 272 320 272 WIRE 496 272 496 144 WIRE 496 272 464 272 WIRE -16 288 -16 144 WIRE 64 288 -16 288 WIRE 192 288 144 288 WIRE 240 288 192 288 WIRE 192 320 192 288 WIRE 272 336 272 304 WIRE -224 352 -224 240 WIRE 192 416 192 384 FLAG -224 352 0 FLAG 208 96 0 FLAG 272 112 0 FLAG 272 336 0 FLAG -224 80 0 FLAG 192 416 0 SYMBOL voltage -224 144 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value SINE(0 5 50) SYMBOL res 160 16 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL res 320 -80 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 10k SYMBOL res 160 272 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 10k SYMBOL res 480 32 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 10k SYMBOL res 480 256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 10k SYMBOL Opamps\\LT1006 272 -16 R0 SYMATTR InstName U1 SYMBOL Opamps\\LT1006 272 208 R0 SYMATTR InstName U2 SYMBOL voltage -224 -48 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 15 SYMBOL diode 208 384 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 TEXT -258 376 Left 2 !.tran 0.1