Re: [CAD_CAM_EDM_DRO] MAX speed of an rotary encoder

On Mon, 11 Aug 2003 13:43:58 +0200, you wrote:

>> > Opto-couplers to isolate and handle the levelshift down to 5v
>> > for the PIC MCU. Had pullup to 24v or 12v (tried both)
>>
>> Did you put the scope on it before the optos? Opto-isolators are not
>> known for their rapid state changes.
>> Tim
>
>Nope, it never hit me to do that! doh
>I am using darlington optocouplers... as you and Jon suggests
>ill take a look at those.

Darlingtons are WAY slow... perhaps a 100% transfer ratio non
darlington might be fine... 6N35 comes to mind for a single channel
on.... Will do MIDI information and handle moderately narrow
pulses...

Harvey

>
>Thanxs!
>
>
>