Version 4
SHEET 1 2016 996
WIRE -848 96 -848 16
WIRE -704 96 -704 16
WIRE -848 256 -848 176
WIRE -704 256 -704 176
WIRE -512 624 -592 624
WIRE -256 624 -512 624
WIRE -96 640 -192 640
WIRE 16 640 -96 640
WIRE -256 656 -336 656
WIRE 112 656 80 656
WIRE 160 656 112 656
WIRE 16 672 -16 672
WIRE -96 688 -96 640
WIRE -16 720 -16 672
WIRE 112 720 112 656
WIRE 112 720 -16 720
WIRE -592 752 -592 624
WIRE 160 768 160 656
WIRE -336 784 -336 656
WIRE -96 784 -96 768
WIRE -96 784 -336 784
WIRE -96 816 -96 784
WIRE -592 960 -592 832
WIRE -96 960 -96 896
WIRE -96 960 -592 960
WIRE 80 960 -96 960
WIRE 160 960 160 848
WIRE 160 960 80 960
WIRE 80 976 80 960
FLAG 80 976 0
FLAG -848 16 10V
FLAG -704 256 -10V
FLAG -704 16 0
FLAG -848 256 0
FLAG -512 624 Vein
FLAG -224 608 -10V
FLAG 160 656 Vaus
FLAG 48 624 -10V
FLAG -208 672 10V
FLAG 64 688 10V
SYMBOL res 144 752 R0
SYMATTR InstName R2
SYMATTR Value 40
SYMBOL voltage -848 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 10
SYMBOL voltage -704 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 10
SYMBOL voltage -592 736 R0
WINDOW 0 -82 41 Left 2
WINDOW 3 -265 108 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Vref1
SYMATTR Value SINE(0 3 10000 0 0 0 5)
SYMBOL Opamps\\LM308 -224 704 M180
WINDOW 3 24 94 Left 2
SYMATTR InstName U2
SYMBOL res -112 672 R0
SYMATTR InstName R6
SYMATTR Value 10000
SYMBOL res -112 800 R0
SYMATTR InstName R7
SYMATTR Value 5000
SYMBOL Opamps\\LM308 48 720 M180
WINDOW 3 24 94 Left 2
SYMATTR InstName U3
TEXT -232 504 Left 2 !.tran 0 1m 0 1u