Version 4
SHEET 1 880 680
WIRE 448 0 -48 0
WIRE -48 48 -48 0
WIRE 48 48 32 48
WIRE 208 48 192 48
WIRE 368 48 352 48
WIRE 448 48 448 0
WIRE -144 80 -160 80
WIRE 32 80 32 48
WIRE 32 80 -64 80
WIRE 112 80 112 48
WIRE 128 80 112 80
WIRE 272 80 272 48
WIRE 288 80 272 80
WIRE 240 96 80 96
WIRE 400 96 240 96
WIRE 512 96 400 96
WIRE -160 112 -160 80
WIRE 80 128 80 96
WIRE 240 128 240 96
WIRE 400 128 400 96
WIRE 32 144 32 80
WIRE 48 144 32 144
WIRE 192 144 192 48
WIRE 208 144 192 144
WIRE 352 144 352 48
WIRE 368 144 352 144
WIRE 128 160 128 80
WIRE 128 160 112 160
WIRE 288 160 288 80
WIRE 288 160 272 160
WIRE 448 160 448 48
WIRE 448 160 432 160
WIRE 48 176 32 176
WIRE 208 176 192 176
WIRE 368 176 352 176
WIRE 512 192 512 176
WIRE 576 192 512 192
WIRE 32 208 32 176
WIRE 192 208 192 176
WIRE 352 208 352 176
WIRE 576 208 576 192
WIRE -160 224 -160 192
WIRE 80 272 80 192
WIRE 240 272 240 192
WIRE 240 272 80 272
WIRE 400 272 400 192
WIRE 400 272 240 272
WIRE 512 272 400 272
FLAG 32 208 0
FLAG 192 208 0
FLAG 352 208 0
FLAG 576 208 0
FLAG -160 224 0
SYMBOL cap 112 32 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL cap 272 32 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL res 48 32 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 56 58 VTop 0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 208 32 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 368 32 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 100k
SYMBOL res 464 32 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R4
SYMATTR Value 200k
SYMBOL voltage 512 80 R0
WINDOW 3 33 58 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage 512 176 R0
WINDOW 0 35 77 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL Opamps\\UniversalOpamp 80 160 R0
SYMATTR InstName U1
SYMBOL Opamps\\UniversalOpamp 240 160 R0
SYMATTR InstName U2
SYMBOL Opamps\\UniversalOpamp 400 160 R0
SYMATTR InstName U3
SYMBOL voltage -160 96 R0
WINDOW 0 -81 53 Left 0
WINDOW 3 -197 163 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value PULSE(0 10 0 1us 1us 1us 0 1)
SYMBOL res -48 64 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 100K
TEXT -50 300 Left 0 !.tran 0 10ms 0 10us