Version 4
SHEET 1 880 680
WIRE 48 -176 16 -176
WIRE 144 -176 128 -176
WIRE 16 -128 16 -176
WIRE 144 -112 144 -176
WIRE 336 -112 192 -112
WIRE 192 -48 192 -112
WIRE 224 -48 192 -48
WIRE 336 -32 336 -112
WIRE 336 -32 288 -32
WIRE 416 -32 336 -32
WIRE 464 -32 416 -32
WIRE 144 -16 144 -32
WIRE 224 -16 144 -16
WIRE 144 0 144 -16
WIRE -32 128 -64 128
WIRE 144 128 144 80
WIRE 144 128 48 128
WIRE 144 144 144 128
WIRE -64 176 -64 128
FLAG 144 224 0
FLAG -64 176 0
FLAG 16 -48 0
FLAG 416 -32 out
SYMBOL res 128 128 R0
SYMATTR InstName R1
SYMATTR Value 250
SYMBOL current -32 128 R270
WINDOW 0 32 40 VTop 2
WINDOW 3 -32 40 VBottom 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value {sweep}
SYMBOL res 160 96 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL voltage 16 -144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res 160 -16 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL Opamps\\opamp 256 -96 R0
SYMATTR InstName U1
SYMATTR SpiceLine Aol=1000K
SYMBOL res 144 -192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 250
TEXT 264 56 Left 2 !.op
TEXT 264 88 Left 2 !.step param sweep -20m 20m 0.1m
TEXT 264 120 Left 2 !.lib opamp.sub