Version 4
SHEET 1 1320 776
WIRE 432 48 400 48
WIRE 544 48 512 48
WIRE 256 176 160 176
WIRE 400 176 400 48
WIRE 400 176 336 176
WIRE 448 176 400 176
WIRE 544 192 544 48
WIRE 544 192 512 192
WIRE 576 192 544 192
WIRE 704 192 656 192
WIRE 912 192 864 192
WIRE 1056 192 992 192
WIRE 448 208 400 208
WIRE 160 240 160 176
WIRE 400 256 400 208
WIRE 704 304 704 192
WIRE 864 304 864 192
WIRE 864 304 704 304
WIRE 928 304 864 304
WIRE 432 320 400 320
WIRE 544 320 512 320
WIRE 1056 320 1056 192
WIRE 1056 320 992 320
WIRE 1104 320 1056 320
WIRE 928 336 864 336
WIRE 160 368 160 320
WIRE 256 400 160 400
WIRE 400 400 400 320
WIRE 400 400 336 400
WIRE 448 400 400 400
WIRE 544 416 544 320
WIRE 544 416 512 416
WIRE 576 416 544 416
WIRE 704 416 704 304
WIRE 704 416 656 416
WIRE 448 432 400 432
WIRE 864 432 864 336
WIRE 160 464 160 400
WIRE 400 528 400 432
WIRE 160 592 160 544
FLAG 864 432 0
FLAG 1104 320 Vo
FLAG 400 528 0
FLAG 400 256 0
FLAG 160 368 0
FLAG 160 592 0
SYMBOL res 1008 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL Opamps\\opamp 960 256 R0
SYMATTR InstName U2
SYMBOL res 672 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 5k
SYMBOL res 672 400 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 15k
SYMBOL Opamps\\opamp 480 128 R0
SYMATTR InstName U1
SYMBOL Opamps\\opamp 480 352 R0
SYMATTR InstName U3
SYMBOL res 528 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 6k
SYMBOL res 528 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 8k
SYMBOL res 352 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 2k
SYMBOL res 352 384 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 4k
SYMBOL voltage 160 224 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 1
SYMBOL voltage 160 448 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 2
TEXT 1104 696 Left 2 !.lib opamp.sub
TEXT 1104 760 Left 2 !.tran 1000