Version 4
SHEET 1 2808 1512
WIRE 1952 832 1952 816
WIRE 1824 880 1648 880
WIRE 2048 880 2016 880
WIRE 1408 896 1408 880
WIRE 1520 896 1520 880
WIRE 1648 896 1648 880
WIRE 2048 944 2048 880
WIRE 2048 944 2016 944
WIRE 2064 944 2048 944
WIRE 1408 992 1408 976
WIRE 1520 992 1520 976
WIRE 1648 1008 1648 976
WIRE 1824 1008 1648 1008
WIRE 2032 1008 2016 1008
WIRE 1952 1072 1952 1056
FLAG 2064 944 OUT
FLAG 1648 880 IN
FLAG 2032 1008 0
FLAG 1520 992 0
FLAG 1408 992 0
FLAG 1952 816 +V
FLAG 1408 880 +V
FLAG 1520 880 -V
FLAG 1952 1072 -V
SYMBOL VOLTAGE 1648 880 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(0 1 1K)
SYMBOL opamps\\SSM2141 1952 944 R0
SYMATTR InstName U2
SYMBOL voltage 1408 880 R0
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL voltage 1520 880 R0
SYMATTR InstName V3
SYMATTR Value -15
TEXT 2032 1096 Left 2 !.tran 3m