Version 4
SHEET 1 1728 1024
WIRE -1840 0 -1840 -16
WIRE -1872 16 -1888 16
WIRE -1728 32 -1808 32
WIRE -1968 48 -1984 48
WIRE -1872 48 -1968 48
WIRE -1840 96 -1840 64
WIRE -1984 192 -1984 48
WIRE -1712 208 -1712 176
WIRE -1984 336 -1984 272
WIRE -1712 352 -1712 288
FLAG -1712 352 0
FLAG -1712 176 Uop
FLAG -1968 48 in-
FLAG -1840 96 0
FLAG -1840 -16 Uop
FLAG -1888 16 0
FLAG -1984 336 0
SYMBOL voltage -1712 192 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL voltage -1984 176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(-6 6 1 1 1 1 4 1)
SYMBOL Opamps\\LT1677 -1840 -32 R0
SYMATTR InstName U2
TEXT -1928 -80 Left 2 !.tran 0 4 0 .1