light fader recommendations for studio rooms?
Richard Crowley wrote:
"Frank Stearns" wrote ...
"Richard Crowley" writes:
wrote ...
Does using a single diode as a half power step introduces RF noise
as well?
No, because it doesn't cause any significant "slicing" of the
mains sinewave form (like a SCR dimmer does).
But it might cause visible flicker as the filament(s) are getting
only every-other pulse of current.
IIRC (and correct me if I'm wrong), *some* power diodes will have a
nasty
transient at conduct/non-conduct. This might or might not be a problem
in the RF range, but a snubber cap parallel with the diode should take
care of the problem.
Around 0.6v (for silicon)
That is what I call "insignificant"
YMMV.
Diodes have what's called a 'recovery' problem that creates RF.
It has nothing to do with the forward voltage drop.
Graham
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