Version 4
SHEET 1 880 680
WIRE 128 32 64 32
WIRE 240 32 192 32
WIRE 288 32 240 32
WIRE 432 32 368 32
WIRE 64 80 64 32
WIRE 336 128 336 112
WIRE 240 144 240 32
WIRE 304 144 240 144
WIRE 432 160 432 32
WIRE 432 160 368 160
WIRE 480 160 432 160
WIRE 304 176 240 176
WIRE 336 208 336 192
WIRE 624 240 624 208
WIRE 736 240 736 208
WIRE 240 256 240 176
WIRE 112 288 64 288
WIRE 240 288 240 256
WIRE 240 288 192 288
WIRE 288 288 240 288
WIRE 432 288 432 160
WIRE 432 288 368 288
WIRE 64 336 64 288
WIRE 624 352 624 320
WIRE 736 352 736 320
FLAG 624 208 +V
FLAG 336 208 -V
FLAG 736 208 -V
FLAG 480 160 Ua
FLAG 64 80 0
FLAG 64 336 0
FLAG 240 256 Up
FLAG 240 32 Un
FLAG 336 112 +V
FLAG 624 352 0
FLAG 736 352 0
SYMBOL Misc\\EuropeanResistor 208 272 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL Misc\\EuropeanResistor 384 272 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL Misc\\EuropeanResistor 384 16 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 0.1k
SYMBOL cap 192 16 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 123 60 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 0.2µ
SYMATTR Value2 IC=0.1
SYMBOL Opamps\\UniversalOpamp2 336 160 R0
SYMATTR InstName U1
SYMATTR Value2 Avol=1Meg GBW=100Meg Slew=100Meg
SYMATTR SpiceLine ilimit=250m rail=0 Vos=0 phimargin=45
SYMBOL voltage 736 224 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value -9
SYMBOL voltage 624 224 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 9
TEXT 48 -120 Left 2 !.options plotwinsize = 0
TEXT 40 -88 Left 2 ;.ic V(uc)=100m
TEXT 32 376 Left 2 !.tran 0 150u 0 10n