Version 4
SHEET 1 880 680
WIRE 192 -16 -400 -16
WIRE 80 80 64 80
WIRE 272 80 160 80
WIRE 192 144 192 -16
WIRE -192 160 -288 160
WIRE -80 160 -112 160
WIRE -48 160 -80 160
WIRE 64 160 64 80
WIRE 64 160 32 160
WIRE 160 160 64 160
WIRE 272 176 272 80
WIRE 272 176 224 176
WIRE -400 192 -400 -16
WIRE -288 192 -288 160
WIRE -80 192 -80 160
WIRE 160 192 128 192
WIRE -288 304 -288 272
WIRE -80 304 -80 272
WIRE 128 304 128 192
WIRE -400 432 -400 272
WIRE -128 432 -400 432
WIRE 192 432 192 208
WIRE 192 432 -128 432
WIRE -128 448 -128 432
FLAG -288 304 0
FLAG -80 304 0
FLAG 128 304 0
FLAG -288 160 in
FLAG 272 176 out
FLAG -128 448 0
SYMBOL res 176 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 2k2
SYMBOL res 48 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1k1
SYMBOL res -96 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1k1
SYMBOL res -96 176 R0
SYMATTR InstName R4
SYMATTR Value 200
SYMBOL voltage -400 176 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage -288 176 R0
WINDOW 3 -9 180 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(-15 4 0 1 1 1m 2)
SYMBOL Opamps\\LT1006 192 112 R0
WINDOW 3 15 133 Left 2
SYMATTR InstName U2
TEXT -388 462 Left 2 !.tran 2