Version 4
SHEET 1 880 692
WIRE 16 48 -192 48
WIRE 288 48 96 48
WIRE 80 144 80 128
WIRE -720 160 -816 160
WIRE -560 160 -720 160
WIRE -512 160 -560 160
WIRE -400 160 -448 160
WIRE -336 160 -400 160
WIRE -192 160 -192 48
WIRE -192 160 -256 160
WIRE -144 160 -192 160
WIRE -32 160 -80 160
WIRE 48 160 -32 160
WIRE 144 176 112 176
WIRE 288 176 288 48
WIRE 288 176 224 176
WIRE 400 176 288 176
WIRE 448 176 400 176
WIRE 48 192 16 192
WIRE 288 208 288 176
WIRE 80 224 80 208
WIRE -560 256 -560 160
WIRE -400 256 -400 160
WIRE -816 272 -816 160
WIRE 448 272 448 176
WIRE -192 304 -192 160
WIRE 16 304 16 192
WIRE 288 304 288 288
WIRE 288 304 16 304
WIRE -32 336 -32 160
WIRE 288 336 288 304
WIRE -816 448 -816 352
WIRE -560 448 -560 336
WIRE -400 448 -400 336
WIRE -192 448 -192 368
WIRE -32 448 -32 416
WIRE 288 448 288 416
WIRE 448 448 448 352
WIRE -816 576 -816 560
WIRE -688 576 -688 560
WIRE -816 672 -816 656
WIRE -688 672 -688 656
FLAG 288 448 0
FLAG -32 448 0
FLAG -192 448 0
FLAG -400 448 0
FLAG -816 448 0
FLAG -560 448 0
FLAG -720 160 in
FLAG 448 448 0
FLAG 400 176 out
FLAG 80 128 V-
FLAG 80 224 V+
FLAG -688 672 0
FLAG -816 672 0
FLAG -816 560 V+
FLAG -688 560 V-
SYMBOL res -240 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1.15k
SYMBOL res 112 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1.15k
SYMBOL cap -80 144 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 68p
SYMBOL cap -208 368 M180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value 68p
SYMBOL cap -448 144 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL res -576 240 R0
SYMATTR InstName R8
SYMATTR Value 1Meg
SYMBOL current -816 352 M180
WINDOW 0 24 80 Left 2
WINDOW 3 23 2 Left 2
WINDOW 123 24 -28 Left 2
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value 0
SYMATTR Value2 AC {1-x}
SYMBOL current 448 352 M180
WINDOW 0 24 80 Left 2
WINDOW 3 23 2 Left 2
WINDOW 123 24 -28 Left 2
WINDOW 39 0 0 Left 0
SYMATTR InstName I2
SYMATTR Value 0
SYMATTR Value2 AC {x}
SYMBOL Opamps\\UniversalOpamp2 80 176 M180
WINDOW 38 16 -60 Left 2
WINDOW 123 -69 -325 Left 2
SYMATTR InstName U1
SYMATTR SpiceModel level.3b
SYMBOL voltage -816 560 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage -688 560 R0
SYMATTR InstName V2
SYMATTR Value -15
SYMBOL res -48 320 R0
SYMATTR InstName R5
SYMATTR Value 1.43k
SYMBOL res -416 240 R0
SYMATTR InstName R6
SYMATTR Value 1.6k
SYMBOL res 272 192 R0
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL res 272 320 R0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL res 240 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Rop
SYMATTR Value 100
TEXT -816 -32 Left 2 !.lib opamp.sub
TEXT -816 16 Left 2 !.ac dec 100 10k 3Meg
TEXT -816 -88 Left 2 !.step param x list 0 1
LINE Normal 128 480 128 256 2
RECTANGLE Normal 240 272 32 96 2