[sdiy] MIDI optocouplers

[James Patchell]

I still use the Sharp PC900.  You can get these from Digikey here in the 
States...

At 10:15 AM 11/12/2004 +0100, Fredrik Carlqvist wrote:

>Hi All!
>
>I've tried several optocouplers for MIDI IN, but lately I use SFH620 (and
>TLP620). Since they are AC couplers, I solder the MIDI connector right 100%
>of the time (instead of just 20%). However, they need a very small
>resistance (470 Ohm on a 5V system) on the collector or the rise time is too
>slow. And that introduces switching noise.
>
>What optocouplers do you use for MIDI?
>
>
>Fredrik C

         -Jim
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