Version 4
SHEET 1 980 680
WIRE 128 -96 96 -96
WIRE 240 -96 208 -96
WIRE -608 -64 -608 -80
WIRE 96 -16 96 -96
WIRE 144 -16 96 -16
WIRE 240 -16 240 -96
WIRE 240 -16 208 -16
WIRE 176 112 176 80
WIRE -272 128 -320 128
WIRE -32 128 -272 128
WIRE 96 128 96 -16
WIRE 96 128 48 128
WIRE 144 128 96 128
WIRE -320 144 -320 128
WIRE 240 144 240 -16
WIRE 240 144 208 144
WIRE 320 144 240 144
WIRE -608 160 -608 144
WIRE 144 160 112 160
WIRE 112 192 112 160
WIRE -320 256 -320 224
WIRE 176 256 176 176
FLAG -320 256 0
FLAG 240 144 vout
FLAG 176 80 v++
FLAG 176 256 v--
FLAG -608 16 0
FLAG -608 240 0
FLAG -608 -80 v++
FLAG -608 144 v--
FLAG 320 256 0
FLAG 112 272 0
FLAG -272 128 vin
SYMBOL cap 208 -32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL res 64 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 25k
SYMBOL voltage -320 128 R0
WINDOW 3 21 158 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(0 650m 150 0 0 10 0)
SYMATTR InstName V1
SYMBOL res 224 -112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10meg
SYMBOL Opamps\\OP27 176 80 R0
SYMATTR InstName U1
SYMBOL voltage -608 -80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL voltage -608 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value -15
SYMBOL res 96 176 R0
SYMATTR InstName R3
SYMATTR Value 25k
TEXT -48 256 Left 2 !.tran 500ms