Version 4
SHEET 1 880 680
WIRE -720 112 -720 0
WIRE -720 288 -720 192
WIRE -720 416 -720 288
WIRE -720 608 -720 496
WIRE -688 288 -720 288
WIRE -688 320 -688 288
WIRE -672 0 -720 0
WIRE -672 432 -672 0
WIRE -640 480 -640 464
WIRE -640 576 -640 560
WIRE -624 464 -640 464
WIRE -576 192 -576 160
WIRE -576 288 -688 288
WIRE -576 288 -576 272
WIRE -576 336 -576 288
WIRE -544 432 -672 432
WIRE -512 160 -576 160
WIRE -512 240 -512 160
WIRE -512 400 -512 320
WIRE -448 0 -672 0
WIRE -448 80 -448 0
WIRE -448 176 -448 144
WIRE -448 208 -448 192
WIRE -448 336 -576 336
WIRE -448 336 -448 288
WIRE -416 176 -448 176
WIRE -416 304 -416 176
WIRE -416 432 -480 432
WIRE -416 432 -416 304
WIRE -416 608 -720 608
WIRE -416 608 -416 432
WIRE -384 192 -448 192
WIRE -384 608 -384 192
WIRE -368 192 -384 192
WIRE -368 192 -368 96
WIRE -352 160 -512 160
WIRE -352 224 -352 160
WIRE -336 112 -416 112
WIRE -336 160 -336 112
WIRE -320 96 -368 96
WIRE -320 160 -336 160
WIRE -320 224 -352 224
WIRE -240 0 -448 0
WIRE -240 48 -240 0
WIRE -240 304 -416 304
WIRE -240 304 -240 272
WIRE -144 48 -144 32
WIRE -80 288 -80 272
WIRE -80 432 -416 432
WIRE -48 400 -48 368
WIRE -48 608 -384 608
WIRE 0 336 -32 336
WIRE 16 432 -16 432
WIRE 112 288 -80 288
WIRE 112 288 112 176
WIRE 112 608 32 608
WIRE 112 608 112 544
WIRE 128 32 -144 32
WIRE 128 336 80 336
WIRE 128 336 128 32
WIRE 128 368 -48 368
WIRE 128 368 128 336
WIRE 144 0 -240 0
WIRE 144 432 96 432
WIRE 144 432 144 0
WIRE 144 512 144 432
WIRE 160 304 -240 304
WIRE 160 304 160 224
WIRE 160 320 160 304
WIRE 176 176 112 176
WIRE 176 176 176 160
WIRE 176 288 176 176
WIRE 208 128 208 80
WIRE 208 256 208 192
WIRE 208 448 208 352
WIRE 208 608 112 608
WIRE 208 608 208 480
WIRE 224 128 208 128
WIRE 224 160 176 160
WIRE 224 192 208 192
WIRE 224 224 160 224
WIRE 240 352 208 352
WIRE 240 448 208 448
WIRE 240 480 208 480
WIRE 240 512 144 512
WIRE 272 400 272 384
WIRE 288 80 208 80
WIRE 288 288 176 288
WIRE 304 608 208 608
WIRE 432 80 352 80
WIRE 432 128 416 128
WIRE 432 128 432 80
WIRE 432 320 160 320
WIRE 432 400 272 400
WIRE 432 400 432 320
WIRE 432 448 432 400
WIRE 448 0 144 0
WIRE 448 160 416 160
WIRE 448 160 448 0
WIRE 448 352 304 352
WIRE 448 544 432 544
WIRE 448 544 448 352
WIRE 464 192 416 192
WIRE 464 288 352 288
WIRE 464 288 464 192
WIRE 464 304 464 288
WIRE 464 416 464 368
WIRE 464 512 432 512
WIRE 464 560 464 512
WIRE 528 192 464 192
WIRE 528 192 528 176
WIRE 528 240 528 192
WIRE 528 416 464 416
WIRE 528 416 528 320
WIRE 528 480 432 480
WIRE 528 480 528 416
WIRE 528 608 384 608
WIRE 528 608 528 480
FLAG -688 320 0
FLAG 208 256 0
FLAG 464 560 0
FLAG 528 176 Tri
IOPIN 528 176 Out
FLAG 112 544 Pul
IOPIN 112 544 Out
FLAG -32 336 Vc
IOPIN -32 336 In
FLAG -624 464 Vc
IOPIN -624 464 Out
FLAG -640 576 0
SYMBOL ca31X0 320 176 R0
WINDOW 38 -21 -24 VRight 0
WINDOW 0 19 16 Right 0
SYMATTR InstName U2
SYMBOL res -592 176 R0
WINDOW 0 -17 30 Left 0
WINDOW 3 -23 65 Left 0
SYMATTR InstName R1
SYMATTR Value 3K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res 112 416 R90
WINDOW 0 -10 83 VBottom 0
WINDOW 3 -37 34 VTop 0
SYMATTR InstName R2
SYMATTR Value 22K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res -528 224 R0
WINDOW 0 -33 37 Left 0
WINDOW 3 -36 62 Left 0
SYMATTR InstName R3
SYMATTR Value 1E7
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL Pote -448 416 R90
WINDOW 0 56 33 VRight 0
WINDOW 123 84 57 VCenter 0
WINDOW 3 1 133 VCenter 0
SYMATTR InstName Simet
SYMATTR Value Rt=1e5
SYMBOL res -464 192 R0
WINDOW 0 -17 30 Left 0
WINDOW 3 -23 65 Left 0
SYMATTR InstName R4
SYMATTR Value 3K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL Pote 16 416 R90
WINDOW 0 55 35 VRight 0
WINDOW 123 -2 137 VCenter 0
WINDOW 3 79 46 VCenter 0
SYMATTR InstName Freq
SYMATTR Value2 Set=0.2
SYMATTR Value Rt=10k
SYMBOL cap 352 272 R90
WINDOW 0 16 62 VBottom 0
WINDOW 3 -10 -7 VTop 0
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL cap 352 64 R90
WINDOW 0 16 65 VBottom 0
WINDOW 3 -12 -10 VTop 0
SYMATTR InstName C2
SYMATTR Value 56p
SYMBOL voltage -720 96 R0
WINDOW 0 4 4 Left 0
WINDOW 3 -16 57 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 7.5
SYMBOL voltage -720 400 R0
WINDOW 0 4 106 Left 0
WINDOW 3 -16 57 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 7.5
SYMBOL cap 448 304 R0
WINDOW 0 38 31 Left 0
WINDOW 3 35 59 Left 0
SYMATTR InstName C3
SYMATTR Value 39p
SYMBOL res 512 224 R0
WINDOW 0 -37 33 Left 0
WINDOW 3 -37 64 Left 0
SYMATTR InstName R5
SYMATTR Value 39K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL ca31X0 336 496 R180
WINDOW 38 -24 -26 VRight 0
WINDOW 0 19 15 Right 0
SYMATTR InstName U3
SYMBOL Pote 208 368 R270
WINDOW 0 -18 90 VRight 0
WINDOW 123 29 -9 VCenter 0
WINDOW 3 27 141 VCenter 0
SYMATTR InstName Ampl
SYMATTR Value Rt=1e5
SYMBOL res 400 592 R90
WINDOW 0 17 118 VBottom 0
WINDOW 3 -12 -13 VTop 0
SYMATTR InstName R6
SYMATTR Value 150K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res 48 592 R90
WINDOW 0 16 112 VBottom 0
WINDOW 3 -12 -19 VTop 0
SYMATTR InstName R7
SYMATTR Value 270K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res 96 320 R90
WINDOW 0 13 111 VBottom 0
WINDOW 3 -10 0 VTop 0
SYMATTR InstName R8
SYMATTR Value 1e4
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL voltage -640 464 R0
WINDOW 0 -12 60 Left 0
WINDOW 3 -16 57 Invisible 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value PWL(100u 0 101u 2 200u 2 201u 4 300u 4 301u 6 400u 6 401u 8 500u 8 501u 0)
SYMBOL Pote -432 48 M0
WINDOW 123 84 92 Center 0
SYMATTR InstName P1
SYMATTR Value2 Set=0.75
SYMATTR Value Rv=100k
SYMBOL OpAmp.Add\\lm13700 -240 160 R0
SYMATTR InstName U1
TEXT -362 566 Left 0 !.tran 1m startup
TEXT -360 592 Left 0 !.option noopiter
TEXT 464 392 Left 0 ;Frec