Version 4
SHEET 1 896 680
WIRE 32 112 16 112
WIRE 128 112 112 112
WIRE 144 112 128 112
WIRE 256 112 224 112
WIRE -176 192 -176 176
WIRE -64 192 -64 176
WIRE 192 208 192 192
WIRE 128 224 128 112
WIRE 160 224 128 224
WIRE 256 240 256 112
WIRE 256 240 224 240
WIRE 304 240 256 240
WIRE 160 256 64 256
WIRE 64 272 64 256
WIRE -176 288 -176 272
WIRE -64 288 -64 272
WIRE 176 288 176 272
WIRE 64 368 64 352
FLAG -64 288 0
FLAG 192 192 +V
FLAG -64 176 +V
FLAG 176 288 -V
FLAG -176 288 0
FLAG -176 176 -V
FLAG 16 112 0
FLAG 64 368 0
FLAG 304 240 OUT
FLAG 64 256 IN
SYMBOL voltage -64 176 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage -176 176 R0
SYMATTR InstName V2
SYMATTR Value -15
SYMBOL res 240 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 2K
SYMBOL res 128 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value {R}
SYMBOL voltage 64 256 R0
SYMATTR InstName V3
SYMATTR Value AC 1
SYMBOL opamps\\LT1206 192 176 R0
SYMATTR InstName U1
TEXT 200 336 Left 2 !.ac oct 10 1 100Meg\n.step param R list 100 200 400 800