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Jon Fairbairn Jon Fairbairn is offline
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Default Neighbour's installation has dimmer switches plus ...

"Dave Plowman (News)" writes:

In article ,
Jon Fairbairn wrote:
Not true at all. If you're lucky they'll work fine together.
If you're unlucky the lamps will use CR PSUs which die
quickly on trailing or leading edge dimmers.


Particularly if the LED load is less than the minumum rated load
of the dimmer. The smell from an exploded LED bulb hangs around
for weeks.


Can you explain the theory behind that?


I dont have theory, I have practice.

But I imagine that (assuming some inductor in the dimmer
circuit) if the load is too low it generates spikes ‰« 240V that
the LED cant handle. Of course, it could have been coincidence,
but Im certain about the smell.


--
Jón Fairbairn
http://www.chaos.org.uk/~jf/Stuff-I-dont-want.html (updated 2014-04-05)