Version 4
SHEET 1 880 680
WIRE 112 -64 16 -64
WIRE 176 -64 112 -64
WIRE 240 -64 176 -64
WIRE 240 16 240 -64
WIRE 112 32 112 16
WIRE 208 32 112 32
WIRE 384 48 272 48
WIRE 208 64 -96 64
WIRE 16 96 16 -64
WIRE 112 96 112 32
WIRE -96 128 -96 64
WIRE -96 128 -160 128
WIRE 240 128 240 80
WIRE 336 128 240 128
WIRE 176 144 176 -64
WIRE 240 144 176 144
WIRE 240 192 240 144
WIRE -96 208 -96 128
WIRE 208 208 -96 208
WIRE 448 224 272 224
WIRE 112 240 112 176
WIRE 208 240 112 240
WIRE 112 256 112 240
WIRE 16 336 16 176
WIRE 112 336 16 336
WIRE 240 336 240 256
WIRE 240 336 112 336
WIRE 336 336 336 128
WIRE 336 336 240 336
WIRE -160 400 -160 208
WIRE 112 400 112 336
WIRE 384 400 384 128
WIRE 448 400 448 304
FLAG 112 400 0
FLAG -160 400 0
FLAG 448 400 0
FLAG 384 400 0
SYMBOL Opamps\\LT1001 240 -16 R0
SYMATTR InstName U1
SYMBOL Opamps\\LT1001 240 160 R0
SYMATTR InstName U2
SYMBOL res 96 -80 R0
SYMATTR InstName R1
SYMATTR Value 5000
SYMBOL res 96 80 R0
SYMATTR InstName R2
SYMATTR Value 3000
SYMBOL res 96 240 R0
SYMATTR InstName R3
SYMATTR Value 4000
SYMBOL voltage 16 80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage -160 112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 9 0 0.1 0 0 1m 2)
SYMBOL res 368 32 R0
SYMATTR InstName R4
SYMATTR Value 1000
SYMBOL res 432 208 R0
SYMATTR InstName R5
SYMATTR Value 1000
TEXT -194 424 Left 2 !.tran 0.1