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RE: copper static SG problems




> > I've a strong cooling fan (25W) that blasts the gap.
> Is 25 W correct?

Yes, correct. It's from a microwave oven, and pretty efficient (in
contrast to those PC cooler fans).
 
But I still don't get it why it slows down when the NST is shorted.

My setup is, from Triac&current limiting times:

220V mains
  1.4kW heater
----/\/\/\----+------+----+
              |      |    |
             fan    PFC  NST
              |      |    |
--------------+------+----+

The PFC is 22uF, a completely matching one (to NST) would have been 26uF.

There is maybe something obvious I'm missing here?

--
*************************************************
 Jan Florian Wagner
 http://www.hut.fi/~jwagner