Version 4
SHEET 1 1036 724
WIRE -800 528 -800 208
WIRE -800 640 -800 608
WIRE -768 208 -800 208
WIRE -672 208 -704 208
WIRE -512 208 -544 208
WIRE -400 208 -432 208
WIRE -240 208 -272 208
WIRE -144 208 -176 208
WIRE -144 336 -144 208
WIRE -144 480 -144 368
WIRE -112 208 -144 208
WIRE -112 336 -144 336
WIRE -112 368 -144 368
WIRE 0 208 -32 208
WIRE 0 352 -48 352
WIRE 0 352 0 208
WIRE 32 208 0 208
WIRE 32 352 32 208
WIRE 64 208 32 208
WIRE 64 352 32 352
WIRE 208 208 144 208
WIRE 208 320 208 208
WIRE 208 352 144 352
WIRE 208 384 208 352
WIRE 208 480 -144 480
WIRE 208 480 208 464
WIRE 256 208 208 208
WIRE 256 320 208 320
WIRE 256 352 208 352
WIRE 288 400 256 400
WIRE 288 448 256 448
WIRE 288 480 208 480
WIRE 288 480 288 448
WIRE 368 208 336 208
WIRE 368 336 320 336
WIRE 368 336 368 208
WIRE 400 208 368 208
WIRE 512 208 480 208
WIRE 512 384 512 208
WIRE 512 480 288 480
WIRE 512 480 512 448
WIRE 544 208 512 208
WIRE 576 480 512 480
WIRE 576 480 576 400
WIRE 608 480 576 480
WIRE 704 400 576 400
WIRE 704 464 672 464
WIRE 704 464 704 400
WIRE 752 208 720 208
WIRE 752 272 752 208
WIRE 752 496 672 496
WIRE 752 496 752 352
WIRE 752 528 752 496
WIRE 752 640 -800 640
WIRE 752 640 752 608
WIRE 880 208 752 208
WIRE 880 528 880 208
WIRE 880 640 752 640
WIRE 880 640 880 608
WIRE 880 672 880 640
FLAG 544 208 VOUT
IOPIN 544 208 Out
FLAG -400 208 CB
IOPIN -400 208 Out
FLAG -272 208 CB
IOPIN -272 208 In
FLAG -544 208 CA
IOPIN -544 208 In
FLAG 288 400 CA
IOPIN 288 400 In
FLAG 880 672 0
FLAG 720 208 +5V
IOPIN 720 208 Out
FLAG -672 208 CA
IOPIN -672 208 Out
SYMBOL Opamps\\opamp 288 272 R0
SYMATTR InstName U2
SYMBOL res 160 192 R90
WINDOW 0 -34 60 VBottom 0
WINDOW 3 -36 55 VTop 0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL res 352 192 R90
WINDOW 0 -33 58 VBottom 0
WINDOW 3 -36 53 VTop 0
SYMATTR InstName R4
SYMATTR Value 10K
SYMBOL res 160 336 R90
WINDOW 0 -27 60 VBottom 0
WINDOW 3 -29 51 VTop 0
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL sw 208 480 R180
WINDOW 0 55 72 Left 0
WINDOW 3 46 46 Left 0
SYMATTR InstName S1
SYMBOL Opamps\\opamp 640 416 M0
SYMATTR InstName U3
SYMBOL res 736 256 R0
WINDOW 0 38 45 Left 0
WINDOW 3 36 69 Left 0
SYMATTR InstName R6
SYMATTR Value 10K
SYMBOL res 736 512 R0
WINDOW 0 41 44 Left 0
WINDOW 3 36 69 Left 0
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL voltage 880 512 R0
WINDOW 0 37 43 Left 0
WINDOW 3 38 67 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5V
SYMBOL res -416 192 R90
WINDOW 0 -29 54 VBottom 0
WINDOW 3 -33 58 VTop 0
SYMATTR InstName RCELL
SYMATTR Value 100K
SYMBOL res 496 192 R90
WINDOW 0 -32 60 VBottom 0
WINDOW 3 -36 49 VTop 0
SYMATTR InstName R5
SYMATTR Value 100K
SYMBOL cap 496 384 R0
WINDOW 0 -57 19 Left 0
WINDOW 3 -60 43 Left 0
SYMATTR InstName C3
SYMATTR Value 100n
SYMBOL Opamps\\opamp -80 288 R0
SYMATTR InstName U1
SYMBOL res -16 192 R90
WINDOW 0 -27 56 VBottom 0
WINDOW 3 -28 53 VTop 0
SYMATTR InstName R1
SYMATTR Value 10K
SYMBOL voltage -800 512 R0
WINDOW 0 40 55 Left 0
WINDOW 3 24 104 Invisible 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName VMOD
SYMATTR Value PULSE(0 5 0 10n 10n 1m 2m)
SYMBOL cap -176 192 R90
WINDOW 0 -26 32 VBottom 0
WINDOW 3 -30 27 VTop 0
SYMATTR InstName C2
SYMATTR Value 1µ
SYMBOL cap -704 192 R90
WINDOW 0 -22 32 VBottom 0
WINDOW 3 -28 29 VTop 0
SYMATTR InstName C1
SYMATTR Value 1µ
TEXT -144 512 Left 0 !.lib opamp.sub
TEXT -144 536 Left 0 !.MODEL SW SW(RON=10m ROFF=10E6 VT=0 VH=0.5)
TEXT -144 560 Left 0 !.tran 0 1 0