Version 4
SHEET 1 1320 680
WIRE 176 -224 128 -224
WIRE 336 -224 176 -224
WIRE 496 -224 336 -224
WIRE 640 -224 496 -224
WIRE 128 -208 128 -224
WIRE 176 -160 176 -224
WIRE 336 -160 336 -224
WIRE 496 -160 496 -224
WIRE 640 -160 640 -224
WIRE 176 16 176 -80
WIRE 336 16 336 -80
WIRE 496 16 496 -80
WIRE 640 16 640 -80
WIRE 832 80 784 80
WIRE 960 80 912 80
WIRE 176 192 176 96
WIRE 336 192 336 96
WIRE 336 192 176 192
WIRE 496 192 496 96
WIRE 496 192 336 192
WIRE 640 192 640 96
WIRE 640 192 496 192
WIRE 784 192 784 80
WIRE 784 192 640 192
WIRE 832 192 784 192
WIRE 960 208 960 80
WIRE 960 208 896 208
WIRE 992 208 960 208
WIRE 832 224 752 224
WIRE 752 272 752 224
FLAG 752 272 0
FLAG 992 208 Vo
FLAG 128 -208 0
SYMBOL res 928 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL Opamps\\opamp 864 144 R0
SYMATTR InstName U2
SYMBOL res 160 0 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 320 0 R0
SYMATTR InstName R2
SYMATTR Value 20k
SYMBOL res 480 0 R0
SYMATTR InstName R3
SYMATTR Value 40k
SYMBOL res 624 0 R0
SYMATTR InstName R4
SYMATTR Value 80k
SYMBOL voltage 176 -64 R180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 1
SYMBOL voltage 336 -64 R180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 0
SYMBOL voltage 496 -64 R180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 1
SYMBOL voltage 640 -64 R180
WINDOW 0 24 96 Left 2
WINDOW 3 24 16 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 1
TEXT 824 280 Left 2 !.lib opamp.sub
TEXT 824 344 Left 2 !.tran 1000