Version 4
SHEET 1 880 680
WIRE -288 288 -288 240
WIRE -288 384 -288 368
WIRE -192 240 -288 240
WIRE -192 240 -192 160
WIRE -192 272 -192 240
WIRE -192 384 -288 384
WIRE -192 384 -192 352
WIRE -176 240 -192 240
WIRE -144 160 -192 160
WIRE -80 240 -112 240
WIRE -80 240 -80 208
WIRE -80 384 -192 384
WIRE -80 384 -80 272
WIRE -64 240 -80 240
WIRE -64 272 -80 272
WIRE -32 224 -32 128
WIRE -32 400 -32 288
WIRE -16 208 -80 208
WIRE 80 160 -80 160
WIRE 80 208 64 208
WIRE 80 208 80 160
WIRE 80 256 0 256
WIRE 80 256 80 208
WIRE 80 336 80 320
WIRE 112 320 80 320
WIRE 112 320 112 256
WIRE 112 384 -80 384
WIRE 112 384 112 320
WIRE 176 128 -32 128
WIRE 176 144 176 128
WIRE 176 256 112 256
WIRE 176 256 176 224
WIRE 176 288 176 256
WIRE 176 400 -32 400
WIRE 176 400 176 368
FLAG 80 336 0
SYMBOL Robertugo\\opamp5 -32 192 R0
WINDOW 0 -31 65 Left 0
SYMATTR InstName U1
SYMATTR SpiceModel uA741
SYMBOL voltage 176 272 R0
WINDOW 3 -7 62 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value 9
SYMATTR InstName V1
SYMBOL voltage 176 128 R0
WINDOW 3 -7 62 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value 9
SYMATTR InstName V2
SYMBOL res 80 192 R90
WINDOW 0 6 64 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName r1
SYMATTR Value 150K
SYMBOL cap -80 144 R90
WINDOW 0 16 56 VBottom 0
WINDOW 3 -12 3 VTop 0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL cap -112 224 R90
WINDOW 0 16 56 VBottom 0
WINDOW 3 -12 3 VTop 0
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL res -208 256 R0
SYMATTR InstName R2
SYMATTR Value 1K2
SYMBOL voltage -288 272 R0
WINDOW 0 -16 61 Left 0
WINDOW 3 -24 129 Left 0
WINDOW 123 25 94 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value SINE(0 1u 1k)
SYMATTR Value2 AC 1
TEXT -346 114 Left 0 !.ac dec 100 1k 1e5