[sdiy] MIDI cable impedance and MIDI In ESD protection?

Mattias Rickardsson mr at analogue.org
Wed Jun 26 10:09:56 CEST 2024


Hi,

When designing or simulating MIDI circuits,
is there any generally accepted model of the MIDI cable's capacitance etc?
Would be nice to be able to make some worst-case calculations.

Also, another question touching (sic!) MIDI:    :-)
Now that MIDI sometimes uses TS plugs and minijacks,
that can be easily touched or accidentally connected to audio & CV,
do people start to put ESD/overvoltage protection on the MIDI Input?
If so, how - perhaps just TVS diodes across the LED,
in order to keep the optocoupler isolated?

Curious regards,
/mr
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