Version 4
SHEET 1 1284 680
WIRE -256 -784 -256 -832
WIRE -160 -784 -160 -832
WIRE -256 -656 -256 -704
WIRE -160 -656 -160 -704
WIRE -320 -560 -400 -560
WIRE -160 -560 -240 -560
WIRE 592 -560 512 -560
WIRE 752 -560 672 -560
WIRE -784 -464 -816 -464
WIRE -544 -464 -704 -464
WIRE -512 -464 -544 -464
WIRE -400 -464 -400 -560
WIRE -400 -464 -432 -464
WIRE -368 -464 -400 -464
WIRE 128 -464 96 -464
WIRE 368 -464 208 -464
WIRE 400 -464 368 -464
WIRE 512 -464 512 -560
WIRE 512 -464 480 -464
WIRE 544 -464 512 -464
WIRE -304 -448 -304 -480
WIRE 608 -448 608 -480
WIRE -368 -432 -368 -464
WIRE -336 -432 -368 -432
WIRE 544 -432 544 -464
WIRE 576 -432 544 -432
WIRE -160 -416 -160 -560
WIRE -160 -416 -272 -416
WIRE 752 -416 752 -560
WIRE 752 -416 640 -416
WIRE -336 -400 -368 -400
WIRE 576 -400 544 -400
WIRE -816 -368 -816 -464
WIRE -784 -368 -816 -368
WIRE -656 -368 -704 -368
WIRE -512 -368 -656 -368
WIRE -400 -368 -432 -368
WIRE -368 -368 -368 -400
WIRE -368 -368 -400 -368
WIRE 96 -368 96 -464
WIRE 128 -368 96 -368
WIRE 256 -368 208 -368
WIRE 400 -368 256 -368
WIRE 512 -368 480 -368
WIRE 544 -368 544 -400
WIRE 544 -368 512 -368
WIRE -304 -352 -304 -384
WIRE 608 -352 608 -384
WIRE -656 -320 -656 -368
WIRE 256 -320 256 -368
WIRE -736 -224 -736 -272
WIRE 176 -224 176 -272
WIRE -816 -208 -816 -368
WIRE -768 -208 -816 -208
WIRE 96 -208 96 -368
WIRE 144 -208 96 -208
WIRE -656 -192 -656 -256
WIRE -656 -192 -704 -192
WIRE -624 -192 -656 -192
WIRE -544 -192 -544 -464
WIRE -544 -192 -560 -192
WIRE 256 -192 256 -256
WIRE 256 -192 208 -192
WIRE 288 -192 256 -192
WIRE 368 -192 368 -464
WIRE 368 -192 352 -192
WIRE -928 -176 -992 -176
WIRE -816 -176 -864 -176
WIRE -768 -176 -816 -176
WIRE -16 -176 -80 -176
WIRE 96 -176 48 -176
WIRE 144 -176 96 -176
WIRE -992 -144 -992 -176
WIRE -816 -144 -816 -176
WIRE -544 -144 -544 -192
WIRE -400 -144 -400 -368
WIRE -80 -144 -80 -176
WIRE 96 -144 96 -176
WIRE 368 -144 368 -192
WIRE 512 -144 512 -368
WIRE -736 -128 -736 -160
WIRE 176 -128 176 -160
WIRE -992 -32 -992 -64
WIRE -816 -32 -816 -64
WIRE -816 -32 -992 -32
WIRE -544 -32 -544 -80
WIRE -544 -32 -816 -32
WIRE -400 -32 -400 -64
WIRE -400 -32 -544 -32
WIRE -80 -32 -80 -64
WIRE 96 -32 96 -64
WIRE 96 -32 -80 -32
WIRE 368 -32 368 -80
WIRE 368 -32 96 -32
WIRE 512 -32 512 -64
WIRE 512 -32 368 -32
WIRE -544 16 -544 -32
WIRE 368 16 368 -32
FLAG -256 -656 0
FLAG -160 -656 0
FLAG -256 -832 V+
FLAG -160 -832 V-
FLAG 368 16 0
FLAG 176 -272 V+
FLAG 176 -128 V-
FLAG 608 -480 V+
FLAG 608 -352 V-
FLAG -544 16 0
FLAG -736 -272 V+
FLAG -736 -128 V-
FLAG -304 -480 V+
FLAG -304 -352 V-
SYMBOL voltage -256 -800 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value +15
SYMBOL voltage -160 -800 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value -15
SYMBOL res 224 -480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 27k
SYMBOL res 496 -480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 47k
SYMBOL schottky 352 -208 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 272 -256 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 80 -160 R0
SYMATTR InstName R10
SYMATTR Value 33k
SYMBOL res 496 -160 R0
SYMATTR InstName R11
SYMATTR Value 27k
SYMBOL res 688 -576 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 30k
SYMBOL voltage -80 -160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -104 -97 Left 2
SYMATTR Value SINE(100m 10m 1k)
SYMATTR InstName V4
SYMBOL cap 48 -192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL res 224 -384 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 27k
SYMBOL res 496 -384 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R14
SYMATTR Value 47k
SYMBOL Opamps\\LT1001 176 -256 R0
SYMATTR InstName U3
SYMBOL Opamps\\LT1001 608 -480 R0
SYMATTR InstName U4
SYMBOL cap 352 -144 R0
SYMATTR InstName C4
SYMATTR Value 1.3µ
SYMBOL res -688 -480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 63k
SYMBOL res -416 -480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 47k
SYMBOL schottky -560 -208 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky -640 -256 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -832 -160 R0
SYMATTR InstName R3
SYMATTR Value 68k
SYMBOL res -416 -160 R0
SYMATTR InstName R4
SYMATTR Value 65k
SYMBOL res -224 -576 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 63k
SYMBOL voltage -992 -160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -104 -97 Left 2
SYMATTR Value SINE(100m 10m 100)
SYMATTR InstName V1
SYMBOL cap -864 -192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL res -688 -384 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 63k
SYMBOL res -416 -384 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 47k
SYMBOL Opamps\\LT1001 -736 -256 R0
SYMATTR InstName U1
SYMBOL Opamps\\LT1001 -304 -480 R0
SYMATTR InstName U2
SYMBOL cap -560 -144 R0
SYMATTR InstName C3
SYMATTR Value 13µ
TEXT -56 -720 Left 2 !.tran 0 50m 0 1u