Version 4
SHEET 1 2356 680
WIRE 240 -304 -528 -304
WIRE 1024 -304 240 -304
WIRE 1696 -304 1024 -304
WIRE 208 -240 80 -240
WIRE 384 -240 288 -240
WIRE 992 -224 880 -224
WIRE 1136 -224 1072 -224
WIRE 1664 -224 1568 -224
WIRE 1808 -224 1744 -224
WIRE 1696 -176 1696 -304
WIRE 1024 -160 1024 -304
WIRE 1568 -160 1568 -224
WIRE 1664 -160 1568 -160
WIRE 240 -144 240 -304
WIRE 880 -144 880 -224
WIRE 992 -144 880 -144
WIRE 1808 -144 1808 -224
WIRE 1808 -144 1728 -144
WIRE 2080 -144 1808 -144
WIRE 80 -128 80 -240
WIRE 208 -128 80 -128
WIRE 1136 -128 1136 -224
WIRE 1136 -128 1056 -128
WIRE 1296 -128 1136 -128
WIRE 1440 -128 1376 -128
WIRE 1664 -128 1440 -128
WIRE 384 -112 384 -240
WIRE 384 -112 272 -112
WIRE 464 -112 384 -112
WIRE 640 -112 528 -112
WIRE 704 -112 640 -112
WIRE 992 -112 704 -112
WIRE -384 -96 -464 -96
WIRE -192 -96 -304 -96
WIRE 208 -96 -192 -96
WIRE -464 -64 -464 -96
WIRE -192 -32 -192 -96
WIRE 640 -32 640 -112
WIRE 704 -16 704 -112
WIRE 1440 32 1440 -128
WIRE -464 48 -464 16
WIRE -192 48 -192 32
WIRE -192 48 -464 48
WIRE 80 48 80 -48
WIRE 80 48 -192 48
WIRE 144 48 80 48
WIRE 240 64 240 -80
WIRE 1024 64 1024 -96
WIRE 1696 64 1696 -112
WIRE -528 176 -528 -304
WIRE -304 176 -528 176
WIRE -208 176 -304 176
WIRE -80 176 -208 176
WIRE -304 208 -304 176
WIRE -208 240 -208 176
WIRE 32 240 -128 240
WIRE 144 240 144 48
WIRE 144 240 32 240
WIRE 640 240 640 48
WIRE 640 240 144 240
WIRE 704 240 704 48
WIRE 704 240 640 240
WIRE 880 240 880 -64
WIRE 880 240 704 240
WIRE 1440 240 1440 96
WIRE 1440 240 880 240
WIRE 1568 240 1568 -80
WIRE 1568 240 1440 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 240 64 0
FLAG 1024 64 0
FLAG 1696 64 0
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 -464 -80 R0
WINDOW 3 -40 170 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(-0.05 0.05 0 0 0 12.5us 25us 100)
SYMATTR InstName V2
SYMBOL res -224 224 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res -224 352 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 656 64 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R7
SYMATTR Value 1k
SYMBOL cap 688 -16 R0
SYMATTR InstName C5
SYMATTR Value 100n
SYMBOL diode 464 -96 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL Opamps\\LT1007 240 -176 R0
SYMATTR InstName U5
SYMBOL Opamps\\LT1007 1024 -192 R0
SYMATTR InstName U7
SYMBOL Opamps\\LT1007 -80 256 R0
SYMATTR InstName U8
SYMBOL res -400 -80 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R8
SYMATTR Value 33
SYMBOL cap -208 -32 R0
SYMATTR InstName C6
SYMATTR Value 100n
SYMBOL res 64 -144 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 192 -224 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R4
SYMATTR Value 100k
SYMBOL res 864 -160 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 976 -208 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R6
SYMATTR Value 100k
SYMBOL cap 1424 32 R0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL res 1280 -112 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R9
SYMATTR Value 1k
SYMBOL Opamps\\LT1007 1696 -208 R0
SYMATTR InstName U1
SYMBOL res 1648 -208 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R10
SYMATTR Value 100k
SYMBOL res 1552 -176 R0
SYMATTR InstName R11
SYMATTR Value 10k
TEXT 104 400 Left 0 !.tran 20ms