In article ,
Martin Brown wrote:
Quartz halogens may be dimmable but the recycling mechanism that keeps
the internal glass surface clean doesn't work if they are run too cool.

I keep on reading this. Yet to experience it in practice. With a vast
range of halogen types, both mains and LV, all on dimmers.

Only time I've seen blackened halogen is car headlight bulbs. And not many
cars have dimmers.

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*No radio - Already stolen.

Dave Plowman London SW
To e-mail, change noise into sound.