Re: [CAD_CAM_EDM_DRO] MAX speed of an rotary encoder

> No pulses, I guess is what you mean.

> Now, when you say it stays high, is that the output of the encoder
> directly, or the output of the optocoupler? Many optocouplers,
> especially Darlington ones, are REALLY slow, and the speed you
> quote sounds very much in that range. If the signal from the
> encoder is actually OK, but the signal OUT of the opto is where the
> problem shows up, then you need faster opto-couplers. You might have
> to use a phototransistor with heavy load and a booster transistor
> after it, to get good speed. There are also logic-out optocouplers
> that have very fast receivers for this kind of problem.
> Jon