DIYbanter - View Single Post - Dimmer switch(s)

CJT

wrote:

On Jan 27, 11:15 am, "Joseph Meehan"
wrote:

wrote:..

Another Nick classic. Quick with the numbers and clueless as
usual. The guy didn't ask if a bulb that is at half brightness uses
less energy. Any dummy knows that. What he asked was whether the
energy saved at the bulb just shows up as energy wasted at the
dimmer. Which of course it doesn;t because dimmers are Triacs. I guess that could be called a trader4 classic since not all dimmers are

triacs.

The OP says he installed 16 dimmer switches in his house. When is
the last time you saw a house dimmer switch that wasn't semiconductor/
Triac based? Every one you can buy down at the home center is.
And that was precisely the issue of the OP's question. Because these
type that use semiconducotrs and have been around for decades do not
just produce a voltage drop like a resistor would. If the dimmer was
resistor based, then it would just dissipate the energy instead of

Read my other post and think that through.

the
dimmed bulb and you would not save energy by dimming the bulb. That
was the question, which asked if the energy that doesn't go to the
bulb was not just dissipated as a voltage drop in the dimmer.

His numbers are correct and I believe he properly addressed the
question. Often a question calls for additional information.

--
Joseph Meehan

Dia 's Muire duit

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