Version 4 SHEET 1 1112 680 WIRE 96 32 32 32 WIRE 208 32 176 32 WIRE 272 32 208 32 WIRE 432 32 352 32 WIRE 704 48 704 32 WIRE 800 48 800 32 WIRE 32 144 32 32 WIRE 208 160 208 32 WIRE 224 160 208 160 WIRE 704 160 704 128 WIRE 752 160 704 160 WIRE 800 160 800 128 WIRE 800 160 752 160 WIRE 432 176 432 32 WIRE 432 176 288 176 WIRE 496 176 432 176 WIRE 752 176 752 160 WIRE 224 192 192 192 WIRE 192 256 192 192 WIRE 32 416 32 224 WIRE 192 416 192 336 WIRE 192 416 32 416 WIRE 256 416 192 416 WIRE 256 464 256 416 FLAG 256 464 0 FLAG 496 176 out FLAG 32 32 in FLAG 752 176 0 FLAG 704 32 +Vcc FLAG 800 32 -Vcc FLAG 256 144 +Vcc FLAG 256 208 -Vcc SYMBOL voltage 32 128 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 -269 42 Left 2 SYMATTR Value SINE(0 0.5 1k 0 0 0) SYMATTR InstName Vin SYMBOL res 192 16 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 10K SYMBOL res 368 16 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 20K SYMBOL voltage 704 32 R0 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 12 SYMBOL voltage 800 32 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value -12 SYMBOL res 176 240 R0 WINDOW 0 36 40 Left 2 WINDOW 3 36 76 Left 2 SYMATTR InstName R3 SYMATTR Value 6.8K SYMBOL UniversalOpamp2 256 176 R0 WINDOW 0 16 -32 Left 2 SYMATTR InstName U2 TEXT 640 324 Left 2 !.tran 2ms TEXT -296 -104 Left 2 ;Montage inverseur TEXT 696 -80 Left 2 ;Bloc alimentation TEXT 640 292 Left 2 ;Directive simulation RECTANGLE Normal 620 -52 932 224 2 RECTANGLE Normal 620 268 852 360 2 RECTANGLE Normal -296 -56 536 496 2