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Old 21st Nov 2021, 8:33 pm   #13
McMurdo
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Join Date: Jun 2009
Location: Staffordshire Moorlands, UK.
Posts: 5,271
Default Re: Ballast in halogen lamps (sometimes)

Quote:
Apparently it will be OK with a trailing-edge dimmer
A trailing edge dimmer is one generally aimed at LED bulbs although they will drive an incandescent bulb as well.

Most traditional dimmers are leading-edge, aimed solely at incandescent bulbs and the sort that contain a triac. A very few 'dimmable' led's will work with either leading or trailing edge but they are few and far between, Osram/LEDvance do one that works great but it's hit and miss with the others.

Even winding a leading edge dimmer up to full and plugging an led bulb in is no guarantee it will work. HWMBO has a leading edge dimmer in an ornamental lamp and there's been a supermarket LED in there for some time. It tends to have a little flicker every so many minutes, sometimes just a blip, but I know its happening and it will get a halogen bulb in there as soon as I can find one.
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