Version 4
SHEET 1 896 680
WIRE -288 96 -528 96
WIRE -112 96 -112 80
WIRE -112 96 -144 96
WIRE -528 112 -528 96
WIRE -144 112 -144 96
WIRE -112 112 -112 96
WIRE -288 128 -288 96
WIRE -176 128 -288 128
WIRE -768 160 -768 144
WIRE -640 160 -640 144
WIRE -176 160 -288 160
WIRE 0 176 -48 176
WIRE -176 192 -224 192
WIRE -528 208 -528 192
WIRE -288 208 -288 160
WIRE -288 208 -528 208
WIRE -176 224 -208 224
WIRE -528 240 -528 208
WIRE -768 256 -768 240
WIRE -640 256 -640 240
WIRE -112 256 -112 240
WIRE -304 336 -320 336
WIRE -208 336 -208 224
WIRE -208 336 -224 336
WIRE -144 336 -208 336
WIRE 0 336 0 176
WIRE 0 336 -64 336
FLAG -640 256 0
FLAG -112 80 +V
FLAG -640 144 +V
FLAG -112 256 -V
FLAG -768 256 0
FLAG -768 144 -V
FLAG -320 336 0
FLAG -528 240 0
FLAG -224 192 0
SYMBOL voltage -640 144 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage -768 144 R0
SYMATTR InstName V2
SYMATTR Value -5
SYMBOL res -48 320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL res -208 320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 111
SYMBOL voltage -528 96 R0
SYMATTR Value SINE(0 1m 100K)
SYMATTR InstName V3
SYMBOL LT1189 -112 176 R0
SYMATTR InstName U1
TEXT 32 360 Left 2 !.tran 1m