Wouter van Ooijen wrote:
> What would be a sure-reliable suggestion? something like an 1N5819?

A schottky would better for spped if the voltage is low enough and the
leakage acceptable (which I think is the case here).

However I would probably make sure in the firmware that there is always a
minimum off time for each relay to guarantee the diode is off before the
relay is switched on again.


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