Version 4
SHEET 1 880 680
WIRE 64 -208 -416 -208
WIRE 368 -208 64 -208
WIRE -112 -112 -240 -112
WIRE 304 -112 -32 -112
WIRE 416 -112 304 -112
WIRE 560 -112 480 -112
WIRE -416 -16 -416 -208
WIRE 16 0 -16 0
WIRE 160 0 96 0
WIRE 224 0 160 0
WIRE 304 0 304 -112
WIRE 400 0 304 0
WIRE 560 0 560 -112
WIRE 560 0 480 0
WIRE 160 32 160 0
WIRE 368 64 368 -208
WIRE 448 64 368 64
WIRE -416 96 -416 64
WIRE -336 96 -416 96
WIRE 64 96 64 -208
WIRE 448 96 448 64
WIRE -240 112 -240 -112
WIRE -144 112 -240 112
WIRE -16 112 -16 0
WIRE -16 112 -64 112
WIRE 32 112 -16 112
WIRE 304 112 304 0
WIRE 416 112 304 112
WIRE -336 128 -336 96
WIRE 160 128 160 96
WIRE 160 128 96 128
WIRE 560 128 560 0
WIRE 560 128 480 128
WIRE 32 144 -80 144
WIRE 416 144 368 144
WIRE 160 176 160 128
WIRE -416 192 -416 96
WIRE -240 192 -240 112
WIRE 368 192 368 144
WIRE 560 208 560 128
WIRE -16 272 -16 112
WIRE 160 272 160 240
WIRE 160 272 -16 272
WIRE -80 288 -80 144
WIRE -240 400 -240 272
WIRE -80 400 -80 368
WIRE -80 400 -240 400
WIRE 368 400 368 272
WIRE 368 400 -80 400
WIRE 560 400 560 288
WIRE 560 400 368 400
WIRE -80 432 -80 400
WIRE -416 480 -416 272
WIRE 64 480 64 160
WIRE 64 480 -416 480
WIRE 448 480 448 160
WIRE 448 480 64 480
FLAG -336 128 0
FLAG -80 432 0
SYMBOL res 112 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 200K
SYMBOL res -48 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 200K
SYMBOL res -96 272 R0
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL res -16 -128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 200K
SYMBOL res 320 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 100K
SYMBOL res 352 176 R0
SYMATTR InstName R6
SYMATTR Value 82K
SYMBOL diode 176 96 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 176 240 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL res 496 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 200K
SYMBOL cap 480 -128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 470n
SYMBOL voltage -416 -32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V1
SYMATTR Value 12V
SYMATTR SpiceLine Rser=0.1
SYMBOL voltage -416 176 R0
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 24 -12 Left 2
SYMATTR InstName V2
SYMATTR Value 12V
SYMATTR SpiceLine Rser=0.1
SYMBOL voltage -240 176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value SINE(0 3.6 1000)
SYMBOL Opamps\\opamp2 64 64 R0
SYMATTR InstName U1
SYMBOL Opamps\\opamp2 448 64 R0
SYMATTR InstName U2
SYMBOL res 544 192 R0
SYMATTR InstName R8
SYMATTR Value 600
TEXT -554 520 Left 2 !.tran 100