Version 4
SHEET 1 880 852
WIRE 272 16 144 16
WIRE 368 16 352 16
WIRE 208 64 208 -48
WIRE -224 80 -224 48
WIRE 48 112 0 112
WIRE 144 112 144 16
WIRE 144 112 128 112
WIRE 176 112 144 112
WIRE 368 144 368 16
WIRE 368 144 320 144
WIRE 384 144 368 144
WIRE 496 144 496 112
WIRE 496 144 464 144
WIRE -224 176 -224 160
WIRE -224 176 -288 176
WIRE 48 176 -144 176
WIRE 176 176 128 176
WIRE -288 192 -288 176
WIRE -224 208 -224 176
WIRE 256 240 256 224
WIRE 288 240 256 240
WIRE 368 240 368 144
WIRE 368 240 352 240
WIRE -224 352 -224 288
WIRE 288 368 144 368
WIRE 208 400 208 352
WIRE 0 448 0 112
WIRE 48 448 0 448
WIRE 144 448 144 368
WIRE 144 448 128 448
WIRE 176 448 144 448
WIRE 368 480 368 368
WIRE 368 480 320 480
WIRE 384 480 368 480
WIRE 496 480 496 144
WIRE 496 480 464 480
WIRE -144 512 -144 176
WIRE 48 512 -144 512
WIRE 176 512 128 512
WIRE -144 560 -144 512
WIRE 496 560 496 480
WIRE 256 592 256 560
WIRE 288 592 256 592
WIRE 368 592 368 480
WIRE 368 592 352 592
WIRE -144 672 -144 640
WIRE -80 672 -144 672
WIRE 0 672 0 448
WIRE 0 672 -80 672
WIRE -80 720 -80 672
WIRE 496 720 496 640
FLAG -288 192 0
FLAG -224 48 +15V
FLAG 208 -48 +15V
FLAG 208 352 +15V
FLAG -224 352 -15V
FLAG 208 224 -15V
FLAG 208 560 -15V
FLAG -80 720 0
FLAG 496 720 0
FLAG 496 112 Out
SYMBOL Opamps\\LT1210 208 144 R0
WINDOW 3 72 38 Left 2
SYMATTR InstName U1
SYMBOL Opamps\\LT1210 208 480 R0
WINDOW 3 73 38 Left 2
SYMATTR InstName U2
SYMBOL cap 352 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL cap 352 576 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL res 480 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1
SYMBOL res 480 464 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1
SYMBOL res 384 352 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 470
SYMBOL res 368 0 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 470
SYMBOL res 144 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 35 27 VTop 2
SYMATTR InstName R5
SYMATTR Value 470
SYMBOL res 144 432 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 31 44 VTop 2
SYMATTR InstName R6
SYMATTR Value 470
SYMBOL res 144 160 R90
WINDOW 0 5 98 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 100
SYMBOL res 144 496 R90
WINDOW 0 4 103 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 100
SYMBOL voltage -224 64 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage -224 192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL voltage -144 544 R0
WINDOW 3 43 56 Left 2
WINDOW 123 57 86 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value 0
SYMATTR Value2 AC 6
SYMATTR InstName V3
SYMBOL res 480 544 R0
SYMATTR InstName R9
SYMATTR Value 8
TEXT 104 760 Left 2 !.ac dec 20 10 100000k