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Thomas G. Marshall Thomas G. Marshall is offline
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Default Dimmer Switch: How to stop filament buzz?

Charles said something like:
"Thomas G. Marshall"
. com
wrote in message news:jX%Bi.1431$tB2.636@trndny05...

I have a 100W globe style bulb attached to a simple 2-way dimmer. The
thing (the bulb) buzzes like crazy on anything other than full on and
full
off. You can even see the filament flapping in the inert breeze.

Is there no way to fully remove this buzzing? I know a little about the
higher speed switching techniques involved, and I also know about the
wave
deforming that some do. But is there not something foolproof? Seems
like
something that should have been solved by now.


Triac control circuits adjust the phase angle of conduction. You can get
a
range of control from near zero to near 360 degrees (full power).

Flapping in the breeze is, I suppose, due to the magnetic fields
interacting.

Yes, they (triac controllers) can buzz.

Short story ... another dimmer?


Seems like either the controller or the controlled is gonna buzz when at 1/2
power.

Is there no way for these things to have a variable transformer that reduces
V amplitude while maintaining the waveform as a (roughly) 60 Hz sine? Or
would that buzz as well?

Curious...

--
"I don't want FOP, God dammit! I'm a DAPPER DAN MAN!"