[ARC5] Technical Question

[J. Forster]

The whole thing is called an optical encoder or optical shaft encoder. It
is made up of:

the shaft, bearings, and interrupter wheel.
a pair of photo-interrupters
sometimes logic level converters
a flip-flop if the unit has up/down and pulse outputs, rather than
two-phase outputs.

Older ones used a pair of grain-of-wheat lamps, which do burn out, and can
often be replaced.

-John

================

> I bought an Icom IC-560 that appears to have a bad component.  The
> suspected bad component is the optical encoder that translates the main
> "chopper wheel" into commands to the CPU.
>
> What is such a component called, technically?  I want to be able to look
> at Digikey and Mouser and other such places to see if I can find a
> suitable replacement.
>
> Thanks,
>
> Wayne
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