Version 4
SHEET 1 896 680
WIRE 32 96 16 96
WIRE 128 96 112 96
WIRE 144 96 128 96
WIRE 256 96 224 96
WIRE 32 176 -304 176
WIRE 128 176 128 96
WIRE 128 176 112 176
WIRE 192 208 192 192
WIRE 128 224 128 176
WIRE 160 224 128 224
WIRE -432 240 -432 224
WIRE 256 240 256 96
WIRE 256 240 224 240
WIRE 288 240 256 240
WIRE -96 256 -304 256
WIRE 0 256 -16 256
WIRE 112 256 0 256
WIRE 160 256 112 256
WIRE 0 272 0 256
WIRE 112 272 112 256
WIRE 192 288 192 272
WIRE -304 320 -304 256
WIRE -432 336 -432 320
WIRE 0 368 0 352
WIRE 112 368 112 352
WIRE -304 416 -304 400
FLAG -432 336 0
FLAG 192 192 +V
FLAG -432 224 +V
FLAG 16 96 0
FLAG 192 288 0
FLAG 112 368 0
FLAG 0 368 0
FLAG -304 416 0
FLAG 288 240 OUT
SYMBOL voltage -432 224 R0
SYMATTR InstName V1
SYMATTR Value 9
SYMBOL res 240 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10Meg
SYMBOL res 128 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1Meg
SYMBOL res 128 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10Meg
SYMBOL res -16 256 R0
SYMATTR InstName R4
SYMATTR Value 1Meg
SYMBOL res 96 256 R0
SYMATTR InstName R5
SYMATTR Value 10Meg
SYMBOL res 0 240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 10Meg
SYMBOL voltage -304 160 R0
WINDOW 0 23 -6 Left 2
WINDOW 3 25 119 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(-2 1 1K)
SYMBOL voltage -304 304 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value SINE(45 40 100)
SYMBOL opamps\\LT1413A 192 176 R0
SYMATTR InstName U1
TEXT 224 424 Left 2 !.tran 10m