Version 4
SHEET 1 976 680
WIRE 48 -176 -368 -176
WIRE 336 -176 48 -176
WIRE 864 -176 336 -176
WIRE -224 -128 -304 -128
WIRE 80 -128 0 -128
WIRE 352 -128 288 -128
WIRE -304 -96 -304 -128
WIRE 240 -96 192 -96
WIRE 944 -96 784 -96
WIRE 0 -80 0 -128
WIRE 144 -80 144 -128
WIRE 144 -80 80 -80
WIRE 192 -80 192 -96
WIRE 288 -80 288 -128
WIRE 304 -80 288 -80
WIRE 416 -80 416 -128
WIRE 416 -80 384 -80
WIRE 48 -48 48 -176
WIRE 864 -48 864 -176
WIRE -224 -32 -224 -128
WIRE -208 -32 -224 -32
WIRE -128 -32 -144 -32
WIRE 0 -32 0 -80
WIRE 0 -32 -48 -32
WIRE 16 -32 0 -32
WIRE 336 -32 336 -176
WIRE 784 -32 784 -96
WIRE 832 -32 784 -32
WIRE 144 -16 144 -80
WIRE 144 -16 80 -16
WIRE 192 -16 144 -16
WIRE 288 -16 288 -80
WIRE 288 -16 240 -16
WIRE 304 -16 288 -16
WIRE 944 -16 944 -96
WIRE 944 -16 896 -16
WIRE 16 0 -32 0
WIRE 416 0 416 -80
WIRE 416 0 368 0
WIRE 496 0 416 0
WIRE 640 0 560 0
WIRE 720 0 640 0
WIRE 832 0 720 0
WIRE 304 16 224 16
WIRE -304 48 -304 -16
WIRE 48 48 48 16
WIRE 640 48 640 0
WIRE 720 48 720 0
WIRE 336 64 336 32
WIRE 864 96 864 16
WIRE 640 160 640 128
WIRE 720 160 720 112
WIRE 720 160 640 160
WIRE -368 176 -368 -176
WIRE -304 176 -368 176
WIRE -208 176 -304 176
WIRE -80 176 -208 176
WIRE 720 176 720 160
WIRE -304 208 -304 176
WIRE -208 240 -208 176
WIRE -32 240 -32 0
WIRE -32 240 -128 240
WIRE 32 240 -32 240
WIRE 224 240 224 16
WIRE 224 240 32 240
WIRE -80 288 -80 176
WIRE -128 304 -128 240
WIRE -112 304 -128 304
WIRE 32 320 32 240
WIRE 32 320 -48 320
WIRE -208 336 -208 320
WIRE -112 336 -208 336
WIRE -208 368 -208 336
WIRE -304 464 -304 288
WIRE -208 464 -208 448
WIRE -80 464 -80 352
FLAG -304 464 0
FLAG -208 464 0
FLAG -80 464 0
FLAG 48 48 0
FLAG 336 64 0
FLAG 864 96 0
FLAG -304 48 0
FLAG 720 176 0
SYMBOL Opamps\\LT1001 -80 256 R0
SYMATTR InstName U1
SYMBOL Opamps\\LT1001 48 -80 R0
SYMATTR InstName U2
SYMBOL Opamps\\LT1001 336 -64 R0
SYMATTR InstName U3
SYMBOL Opamps\\LT1001 864 -80 R0
SYMATTR InstName U4
SYMBOL voltage -304 192 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage -304 -112 R0
WINDOW 3 -34 206 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(-12 12 1ms 0 0 11us 22us 100)
SYMBOL res -224 224 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res -224 352 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL cap -144 -48 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL res -32 -48 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 3.9k
SYMBOL res 96 -96 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R4
SYMATTR Value 56k
SYMBOL cap 144 -144 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value 10p
SYMBOL cap 208 -16 R180
WINDOW 0 24 64 Left 0
WINDOW 3 24 8 Left 0
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL cap 352 -112 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C4
SYMATTR Value 10p
SYMBOL res 224 -112 R0
SYMATTR InstName R5
SYMATTR Value 4.7k
SYMBOL res 400 -96 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 100k
SYMBOL res 656 144 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R7
SYMATTR Value 22k
SYMBOL cap 704 48 R0
SYMATTR InstName C5
SYMATTR Value 100n
SYMBOL diode 496 16 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value 1N4148
TEXT 190 352 Left 0 !.tran 20ms