On Wed 08 Oct 2008 07:41:40p, terry told us...

On Oct 8, 11:40*pm, The Daring Dufas wrote:
N8N wrote:
On Oct 6, 12:43 am, Jeff Wisnia wrote:
Thomas G. Marshall wrote:
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 abou
t the
higher speed switching techniques involved, and I also know about
the
wave
deforming that some do. *But is there not something foolproof? *S
eems like
something that should have been solved by now.
Thanks
Maybe a heavy duty bulb, which has additional filament supports in
it,
would be quieter?

You could always add a bridge rectifier and filter cap to the
dimmer's
output so the bulb runs on DC. G

Jeff

--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
The speed of light is 1.98*10^14 fathoms per fortnight.

ISTR that maybe 30 years ago there were sold these little buttons that
you were supposed to stick on the bottom of your light bulbs to make
them last longer. *they also made the bulbs a little dimmer. *I don
't
know if they just dropped the voltage or also rectified it. *I was
just a little kid at the time so my memory is a little furry. *I
couldnt find anything on a web search, anyone remember what I am
thinking of? *(I don't know that they really did a whole heck of a
lot...)

nate

Back in the 1980 I had a business partner who's
brother in law tried to get us to sell them for
him. It was a disk that dropped into a regular
Edison 120vac lamp socket. It was just a rectifier,
a simple rectifier that supplied pulsed DC to
the bulb. It was called a Power Saver and the bulb
did light up a bit dimmer.

TDD- Hide quoted text -

- Show quoted text -

If a 100 watt bulb is necessary for sufficient light why have a
dimmer? Replace it with a regular switch!
Aternatively if the 100 is too bright put in a smaller bulb!
This is just another incompatibility of the variuos el-cheapo
electrical gadgets that are sold. For example most (cheap) dimmers
won't or shouldn't be used with the now much touted CFLs! Because they
are incompatible!


Any dimmer would be incompatible with an ordinary CFL unless it is a
*dimmable* CFL. There are distinct design differences in the balasts of
the two types of CFLs.

Many filaments will buzz depending on the percentage of dimming at any
given point. The more the light is dimmed, usually the more the filament
is more likely to buzz. If the OP normally dims the 100 watt bulb
significantly, then a reduction in wattage may change how much, if any, the
bulb will buzz. A change in type and/or quality of dimmer may make a
difference as well.

--
Wayne Boatwright
(correct the spelling of "geemail" to reply)

*******************************************
Date: Wednesday, 10(X)/08(VIII)/08(MMVIII)
*******************************************
Countdown till Veteran's Day
4wks 5dys 4hrs 5mins
*******************************************
All you have to do is say something
nobody understands and they'll do