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Re: Singing light bulb on dimmer switch



David D. wrote:

> Most light bulbs hum loudly when dimmed via a dimmer switch.  A few are ok,
> because they contain extra filament supports at critical positions.
>
>
>
> 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
>
>
>
>
I wonder whether a rectifier and capacitor between the dimmer and the
lamp would work (then the lamp would see DC).  I bet somebody here
knows whether that would wreak havoc with the dimmer.

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