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Do LED bulbs interfere with DAB radio?



 
 
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Old December 27th 16, 08:56 AM posted to uk.tech.digital-tv
Jim Lesurf[_2_]
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Posts: 4,126
Default Do LED bulbs interfere with DAB radio?

In article , Scott
wrote:

There was no problem when the transformer was running halogen bulbs. Can
the interference be passed backwards through the transformer into the
mains?


Yes, that may happen. Can't say more due to lack of detailed information.

As the lights nearest the radio cause the greatest problem and
all the transformers are together - and connected to the lighting
circuit of course - this seems unlikely.



By default, assume that the intereference needs to be dealt with as near to
the actual source as possible. In this case it sounds like it means each
individual LED lamp. Putting a filter at the transformer may reduce the
effect but not cure it.

If you use something like a ferrite clamp/ring at a distance along the
wiring the lamps may simply radiate from the wiring between lamp and
ferrite. So the general rule is to fix problems 'at source' so far as
possible.

The snag is that it may be the case that each lamp needs individual
treatment.

You *might* find that twisting the wiring may reduce radiate interference.

However this all sounds like the lamps aren't fit for your purpose / use.

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

 




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