> I used to build those things in the dark, distant past.  I used 
> MOC3010 opto-triac back then in place of the original SCR.
> Worked extremely well

Dwayne, I built a stage strobe a looooong time ago (79 ?), from a
design in ETI. It used the traditional method of neon breakdown to
trigger the SCR via an ST2 diac. ISTR it used a BT131 as the
dump switch for 2uF. I'm not sure how far back the MOC3010
goes but I wonder why something as relatively hefty as a BT131
would be used. Although many-amp SCRs aren't that expensive
so it's cheap over-engineering



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