Version 4
SHEET 1 880 680
WIRE 16 48 0 48
WIRE 128 48 96 48
WIRE -448 80 -528 80
WIRE -304 80 -368 80
WIRE -80 80 -112 80
WIRE -528 96 -528 80
WIRE -80 128 -80 80
WIRE 0 128 0 48
WIRE 0 128 -80 128
WIRE 32 128 0 128
WIRE 128 144 128 48
WIRE 128 144 96 144
WIRE 208 144 128 144
WIRE 32 160 0 160
WIRE -304 176 -528 176
WIRE -80 176 -112 176
WIRE -528 240 -528 176
WIRE -80 240 -80 176
WIRE -80 240 -528 240
WIRE 0 240 0 160
WIRE 0 240 -80 240
WIRE 208 240 0 240
WIRE 208 256 208 240
FLAG 208 256 0
FLAG 208 144 Vout
SYMBOL Opamps\\opamp 64 80 R0
WINDOW 0 0 32 Invisible 0
SYMATTR InstName U1
SYMBOL res 112 32 R90
WINDOW 0 0 56 Invisible 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 1600K
SYMBOL res -352 64 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL voltage -528 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 0 131 Left 0
SYMATTR Value SINE(1.5V 0.2V 1kHz)
SYMATTR InstName V1
SYMBOL Optos\\4N25 -208 144 R0
SYMATTR InstName U2
TEXT -288 360 Left 0 !.tran 20ms
TEXT -288 384 Left 0 !.lib opamp.sub
TEXT -256 208 Left 0 ;XXXXXX