Version 4
SHEET 1 880 680
WIRE 64 176 48 176
WIRE 272 176 144 176
WIRE 160 192 144 192
WIRE 144 208 144 192
WIRE 240 208 224 208
WIRE -144 224 -416 224
WIRE -64 224 -144 224
WIRE 48 224 48 176
WIRE 48 224 16 224
WIRE 112 224 48 224
WIRE 224 240 224 208
WIRE 224 240 176 240
WIRE 272 240 224 240
WIRE -416 256 -416 224
WIRE -144 256 -144 224
WIRE -112 256 -144 256
WIRE -16 256 -32 256
WIRE 0 256 -16 256
WIRE 112 256 80 256
WIRE 224 256 224 240
WIRE 320 256 224 256
WIRE 432 256 400 256
WIRE 432 272 432 256
WIRE 144 288 144 272
WIRE 160 288 144 288
WIRE -304 304 -368 304
WIRE -208 304 -240 304
WIRE -96 304 -208 304
WIRE -96 320 -96 304
WIRE 192 320 48 320
WIRE 48 336 48 320
WIRE -368 352 -368 304
WIRE 432 352 432 336
WIRE -208 368 -208 304
WIRE -16 384 -16 256
WIRE -16 384 -48 384
WIRE 16 384 0 384
WIRE -96 432 -96 416
WIRE -96 432 -128 432
WIRE -128 448 -128 432
WIRE -416 464 -416 336
WIRE -368 464 -368 432
WIRE -368 464 -416 464
WIRE -208 464 -208 448
WIRE -208 464 -368 464
WIRE -96 464 -96 432
WIRE -96 464 -208 464
WIRE 0 464 0 384
WIRE 0 464 -96 464
WIRE 48 464 48 432
WIRE 192 464 48 464
FLAG -128 448 0
FLAG 192 464 V-
IOPIN 192 464 Out
FLAG 192 320 V+
IOPIN 192 320 Out
FLAG 160 192 V+
IOPIN 160 192 In
FLAG 160 288 V-
IOPIN 160 288 In
FLAG 432 352 0
SYMBOL Robertugo\\OPAMP5 144 176 R0
WINDOW 0 -28 64 Left 0
WINDOW 38 -76 117 Left 0
SYMATTR InstName U1
SYMATTR SpiceModel tl051Lt
SYMBOL njf -48 320 M0
SYMATTR InstName J1
SYMBOL res -224 352 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL diode -240 288 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D1
SYMATTR Value 1N914
SYMBOL res -16 240 R90
WINDOW 0 16 107 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 47k
SYMBOL res 96 240 R90
WINDOW 0 16 9 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 47k
SYMBOL res 32 208 R90
WINDOW 0 16 109 VBottom 0
WINDOW 3 -11 15 VTop 0
SYMATTR InstName R4
SYMATTR Value 47k
SYMBOL Miscel\\v+&- 48 368 M0
WINDOW 0 3 -48 Left 0
SYMATTR InstName U2
SYMATTR Value VNP=15
SYMBOL res 160 160 R90
WINDOW 0 14 103 VBottom 0
WINDOW 3 -13 27 VTop 0
SYMATTR InstName R5
SYMATTR Value 39k
SYMBOL Robertugo\\Pote 256 144 R0
WINDOW 0 -33 47 Left 0
WINDOW 3 -34 125 Left 0
WINDOW 123 -4 144 Center 0
SYMATTR InstName U3
SYMATTR Value Rt=15K
SYMBOL Misc\\signal -368 336 R0
WINDOW 3 -47 144 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(-.5 .5 0 0 0 .05m .1m)
SYMATTR InstName Vr
SYMBOL Misc\\signal -416 240 R0
WINDOW 0 34 40 Left 0
WINDOW 3 -9 -32 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Vr1
SYMATTR Value PULSE(-.5 .5 0 2.5m 2.5m 0 1m)
SYMBOL cap 416 272 R0
WINDOW 0 -15 15 Left 0
WINDOW 3 -33 53 Left 0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL res 416 240 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 10k
TEXT -448 544 Left 0 !.tran 10m