Version 4
SHEET 1 880 680
WIRE 496 -16 480 -16
WIRE 496 16 496 -16
WIRE 208 48 112 48
WIRE 304 48 288 48
WIRE 192 128 192 -16
WIRE 112 144 112 48
WIRE 112 144 64 144
WIRE 160 144 112 144
WIRE 304 160 304 48
WIRE 304 160 224 160
WIRE 320 160 304 160
WIRE 496 160 496 96
WIRE 576 160 496 160
WIRE 160 176 112 176
WIRE 576 176 576 160
WIRE 496 224 496 160
WIRE 112 240 112 176
WIRE 112 240 64 240
WIRE -304 256 -304 192
WIRE -208 256 -208 192
WIRE 112 336 112 320
WIRE 192 336 192 192
WIRE 496 336 496 304
WIRE 496 336 480 336
WIRE -304 368 -304 336
WIRE -208 368 -208 336
FLAG 576 176 0
FLAG 480 336 -12V
IOPIN 480 336 Out
FLAG 480 -16 +12V
IOPIN 480 -16 Out
FLAG 192 -16 +12V
IOPIN 192 -16 In
FLAG 192 336 -12V
IOPIN 192 336 In
FLAG 320 160 Output
IOPIN 320 160 Out
FLAG -304 368 0
FLAG -304 192 Input1
IOPIN -304 192 Out
FLAG -208 368 0
FLAG -208 192 Input2
IOPIN -208 192 Out
FLAG 112 336 0
FLAG -16 144 Input1
IOPIN -16 144 In
FLAG -16 240 Input2
IOPIN -16 240 In
SYMBOL Opamps\\LT1056 192 96 R0
SYMATTR InstName U1
SYMBOL voltage 496 0 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 12V
SYMBOL voltage 496 208 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 12V
SYMBOL res 80 128 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 304 32 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 20k
SYMBOL voltage -304 240 R0
WINDOW 3 -111 174 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value SINE(0 1 100)
SYMBOL voltage -208 240 R0
WINDOW 3 -37 174 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value SINE(0 1 200)
SYMBOL res 80 224 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 128 336 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R4
SYMATTR Value 10k
TEXT -74 -64 Left 0 !.tran .025