DIYbanter - View Single Post - Why aren't many / most LED light bulbs dimmable?

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On Sun, 26 Dec 2010 00:52:51 -0500, wrote:

On Sat, 25 Dec 2010 22:36:45 -0600, z wrote:

Lets get to the bottom line. Are you trying to say a dimmed LED (by
increasing the size of the resistor) draws more current than one at
full brightness?

Of course not. I'm saying that it is NOT LINEAR and NOT EFFICIENT.

I guess the point is LEDs are so efficient to start with and dimming
them will cut the draw even more, why make things hard on yourself to
squeeze out an extra few pennies a year.

I could say the same thing about replacing incandescents in the first
place. Why, for a few mennies a year. In fact, that's what I do.

If you are replacing an incandescent any thing you do has to be
better.

Not necessarily true. You still haven't come up with a good scheme to
dim them.