[chbot] Opto isolated triacs

[Robin Gilks]

> I'm only switching a max of 200mA @ 24VAC to operate irrigation solenoid
> values. My homebrew controller can handle 32 valves (or pump controls) and
> it all runs fine for the last 3-4 years apart from the occasional solenoid
> going open circuit for no reason that I can find.
>
> I'm looking for minor adjustments rather than wholesale redesign to save
> money on solenoids!!
>

I'll bring a couple of solenoids along to the next meeting - perhaps
someone will have better luck than be determining the failure mode...



-- 
Robin Gilks
Internet: robin at gilks.org    http://www.gilks.org
Tel:      (+64) (3) 347 4370