> Are you referring to the load switched with a triac? I will
> use a choke
> in my prototype.
As was mentioned earlier, the inductance is a multiplier that you can use
when figuring the energy in the line transients that will occur when the
triac switches. I have a design that has a couple of years of solid running
on it that surprised me when connecting it to an inductive load. Granted it
was bound to be difficult with it's 480V pri into 1400Amp rectified
secondary.) The transients were humongous and hung up the gate opto's triac
outputs in a kind of crosstalk across phases. A single phase device will
likely perform similarly with an inductive load and more than one running at
a time.

I still like the simple circuit though and intend to play some more with it.
I like the quick low pulse for the zero-cross detect.....now if there was
only a way to detect neg or pos going....I am curious also as to how one
would figure the capacity of the power supply.

When I get to actually try this, i will share the results.

I will be interested to hear what you find in your
> investigations. I too have built myself a Bitscope recently.

The bitscope is a very cool tool, is it not....using it for the first time
was like turning on the lights after working in a dark room....
>
> Best Regards,
>
> Sean

Chris

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