Version 4
SHEET 1 880 680
WIRE 336 -16 -272 -16
WIRE 176 32 -144 32
WIRE 176 48 176 32
WIRE 288 64 272 64
WIRE 400 64 368 64
WIRE -272 112 -272 -16
WIRE -144 112 -144 32
WIRE 336 112 336 -16
WIRE 272 128 272 64
WIRE 272 128 176 128
WIRE 304 128 272 128
WIRE 400 144 400 64
WIRE 400 144 368 144
WIRE 448 144 400 144
WIRE 304 160 0 160
WIRE 176 176 176 128
WIRE 0 192 0 160
WIRE -272 208 -272 192
WIRE -144 208 -144 192
WIRE 336 208 336 176
WIRE 176 272 176 256
WIRE 0 288 0 272
FLAG 336 208 0
FLAG -144 208 0
FLAG 448 144 out
FLAG 176 272 0
FLAG 0 288 0
FLAG -272 208 0
SYMBOL voltage -144 96 R0
SYMATTR InstName Vsup
SYMATTR Value 5V
SYMBOL res 272 80 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName RF
SYMATTR Value 15k
SYMBOL res 160 32 R0
SYMATTR InstName Rohi
SYMATTR Value 5.6k
SYMBOL res 160 160 R0
SYMATTR InstName Rolo
SYMATTR Value 47k
SYMBOL voltage 0 176 R0
SYMATTR InstName Vin
SYMATTR Value 4V
SYMBOL Opamps\\LT1079 336 80 R0
SYMATTR InstName U1
SYMBOL voltage -272 96 R0
SYMATTR InstName Vsup1
SYMATTR Value 10V
TEXT -154 356 Left 0 !.dc vin 3.5 4.5 0.25