Version 4
SHEET 1 880 680
WIRE -112 80 -240 80
WIRE 16 80 -32 80
WIRE 112 80 16 80
WIRE 240 80 192 80
WIRE -240 96 -240 80
WIRE 80 160 80 144
WIRE -240 192 -240 176
WIRE 16 208 16 80
WIRE 48 208 16 208
WIRE 240 208 240 80
WIRE 240 208 208 208
WIRE -64 240 -96 240
WIRE 48 240 0 240
WIRE 48 272 16 272
WIRE 240 272 208 272
WIRE -368 304 -368 288
WIRE -256 304 -256 288
WIRE 80 336 80 320
WIRE 112 336 112 320
WIRE -368 400 -368 384
WIRE -256 400 -256 384
WIRE -112 400 -160 400
WIRE 16 400 16 272
WIRE 16 400 -32 400
WIRE 112 400 16 400
WIRE 240 400 240 272
WIRE 240 400 192 400
FLAG -240 192 0
FLAG -368 400 0
FLAG -256 400 0
FLAG -368 288 +V
FLAG -256 288 -V
FLAG -160 400 0
FLAG -96 240 0
FLAG 112 336 +V
FLAG 80 144 +V
FLAG 80 336 -V
SYMBOL voltage -240 80 R0
WINDOW 123 24 132 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value SINE(0 .5 10K)
SYMBOL voltage -368 288 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage -256 288 R0
SYMATTR InstName V2
SYMATTR Value -5
SYMBOL LT1994 112 240 R0
SYMATTR InstName U1
SYMBOL res 208 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 499
SYMBOL res -16 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 499
SYMBOL res 208 384 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 499
SYMBOL res -16 384 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 499
SYMBOL cap 0 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value .1µ
TEXT 368 352 Left 2 !.tran 1m