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Re: Singing light bulb on dimmer switch


    Thanks for the offer.  But I do need a G50.

    A G40 is a 5" diameter globe with a standard screw base.   I could use a
plain 150w bulb, but it would not be as attactive.  This is an tiffany-shade
type ceiling swag over the kitchen table.

 - David

"mm" <NOPSAMmm2005@xxxxxxxxxxx> wrote in message
> On Sat, 20 May 2006 03:22:00 -0400, "David D."
> <daviddiamond.remove-if-not-spam@xxxxxxxxxxx> wrote:
> >Most light bulbs hum loudly when dimmed via a dimmer switch.
> That's not been my experience.
> >A few are ok,
> >because they contain extra filament supports at critical positions.
> I only have three dimmers for lights, but I've never had a lightbulb
> hum because of one.  Until a couple weeks ago, I was using a 150 watt
> bulb in a desk lamp with a built-in dimmer right next to me.
> Unfortunately, I knocked the lamp off the table and broke the bulb so
> I don't have it, but I think it was the standard GE 150 watt bulb they
> sell in supermarkets.
> In the dining room I also have a 150 with a dimmer, and I'll check the
> brand if you want me too.  I only have to take off the cover.  It's
> probably not G-40 since I've never heard of that, so let me know if
> you want me to check.
> Otherwise, I'd say just try a different brand.
> >My hanging (swag) kitchen tiffany-style light takes a G40-150w bulb.  It
> >hums badly when dimmed.
> >
> >(1) Is there a brand of G40-150 bulb that does not hum when dimmed?
> >(2) Alternatively, is there a small, in-line filter available, or a
> >filtered, table-top dimmer switch, that would create a smoother
> >short-duty-cycle output than the intermittent, alternating square-wave
> >created by a typical dimmer switch?   Would that be safe for a household
> >lamp application?  Would that eliminate the audible humming?
> >
> > - David

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