Version 4
SHEET 1 880 1432
WIRE 304 -144 112 -144
WIRE 368 -144 304 -144
WIRE 400 -144 368 -144
WIRE 112 -48 112 -144
WIRE 224 -48 224 -64
WIRE 288 -32 272 -32
WIRE 224 48 224 32
WIRE 240 48 224 48
WIRE 272 48 272 -32
WIRE 272 48 240 48
WIRE 352 48 352 -32
WIRE 304 112 304 -144
WIRE 240 128 240 48
WIRE 272 128 240 128
WIRE 352 144 352 48
WIRE 352 144 336 144
WIRE 432 144 352 144
WIRE 544 144 496 144
WIRE -576 160 -656 160
WIRE -352 160 -496 160
WIRE -240 160 -352 160
WIRE -96 160 -160 160
WIRE -16 160 -96 160
WIRE 208 160 48 160
WIRE 272 160 208 160
WIRE 304 192 304 176
WIRE 544 192 544 144
WIRE 400 208 400 -144
WIRE 112 288 112 32
WIRE 208 288 208 240
WIRE 208 288 112 288
WIRE 400 288 288 288
WIRE 544 336 544 272
WIRE 544 336 464 336
WIRE 544 368 544 336
WIRE -96 400 -96 160
WIRE 400 432 400 384
WIRE 0 464 -48 464
WIRE 128 464 0 464
WIRE 288 464 288 288
WIRE 288 464 208 464
WIRE -96 512 -96 496
FLAG 304 192 0
FLAG 368 -64 0
FLAG 112 368 0
FLAG 224 -128 0
FLAG -96 512 0
FLAG -352 240 0
FLAG -656 240 0
FLAG 544 432 0
FLAG 400 432 0
FLAG 0 528 0
SYMBOL Opamps\\AD711 304 80 R0
SYMATTR InstName U1
SYMBOL voltage 368 -160 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 9
SYMBOL pjf -48 400 M0
SYMATTR InstName J1
SYMATTR Value J176
SYMBOL res 192 144 R0
SYMATTR InstName R1
SYMATTR Value 1Meg
SYMBOL res 96 272 R0
SYMATTR InstName R2
SYMATTR Value 24k
SYMBOL res 96 -64 R0
SYMATTR InstName R3
SYMATTR Value 24k
SYMBOL res 368 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 1Meg
SYMBOL cap 352 -48 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 47p
SYMBOL res 208 -64 R0
SYMATTR InstName R5
SYMATTR Value 2.2k
SYMBOL cap 208 -128 R0
SYMATTR InstName C3
SYMATTR Value 10µ
SYMBOL cap 48 144 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 0.1µ
SYMBOL res -144 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 180k
SYMBOL res -368 144 R0
SYMATTR InstName R7
SYMATTR Value 600
SYMBOL voltage -656 144 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 0
SYMATTR Value2 AC 1
SYMATTR InstName V2
SYMATTR Value SINE(0 0.02 1k)
SYMBOL cap 496 128 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value 10µ
SYMBOL res 528 176 R0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL diode 560 432 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL npn 464 288 M0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL res 384 192 R0
SYMATTR InstName R11
SYMATTR Value 1Meg
SYMBOL cap -16 464 R0
SYMATTR InstName C6
SYMATTR Value 10µ
SYMBOL res 224 448 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 1k
SYMBOL res -480 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 600
TEXT -688 552 Left 2 !.tran 0 200m 0
TEXT -328 -152 Left 2 !;ac dec 200 10 100k