Re: gEDA-user: basic anti-EMI design q

[DJ Delorie <dj@xxxxxxxxxxx>]

> Switching at a zero crossing is a good idea in general. You will
> dissipate less power in your switch and generate less EMI since the
> di/dt should be much lower.

So, on one of those dual-led AC optos, it would be better to interrupt
on the just-before-zero edge, so that all the switching happens near
the zero?  Or on the rising edge, to avoid any chance of glitches?

Sigh, yet another circuit to work up and get posted for review.
And/or something to prototype and see how wide those pulses are.