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Author Topic: XPDFs vs LM15s with LED bulbs? Still working on the driveway project.  (Read 1789 times)


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Howdy, I've been down this way before (or should I say driveway). I found out that the LM15s are pushing the LED bulbs too high in the light fixtures.
Would the XPDF module be a viable alternative, the dimming function is not required I can definitely re-use the LM15s somewhere else in the house.

This seems to be a fairly straightforward and self-contained project, would I need a controller (I know I'll need one eventually).

I am going to try and upload a drawing of my project to see if any of the experts here can come up with alternative solutions.

Thanks as always. >!
« Last Edit: August 14, 2012, 11:27:59 AM by Robertone139 »

Brian H

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Re: XPDFs vs LM15s with LED bulbs? Still working on the driveway project.
« Reply #1 on: August 14, 2012, 11:09:54 AM »

Well the XPDF is designed for 40-300 watt incandescent loads and the users manual says small loads below 40 watts may pulse and flicker.
If the LED bulbs are rated for a Dimmer they may or may not work.
If they are not rated for a dimmer. I would suggest not even trying them.
Even at 100% ON the AC waveform is modified by the triac used in the dimmer circuit.
Maybe an XPFM relay type may work better.
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