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