In article ,
Scott wrote:
It could well be the LEDs present too low a load for a SMPS to operate
correctly. So you may need to swop it for one designed for LEDs. Or
replace the fittings with similar ones designed for mains LEDs. Not really
sure using a low volt SMPS designed for 12v tungsten plus and an extra one
in the LED makes any sense. It might even be possible to convert the
existing fittings.

I was using a torroidal transformer, a long way from the radio. My
research at the time suggested that the SMPS operating at 20x greater
current (than mains voltage) was likely to be causing RF interference
and as far as I can see that is what happened.

Using the same torroidal transformer with halogen bulbs caused on
difficulties. I now have mains voltage LED bulbs with no difficulty.

Once again, the common factor was the 12 Volt LED bulbs. I blame them.

Ah - right. Although probably just poor design. No reason I can think of
why a 12v AC SMPS to drive a LED should be any different to a 240v AC one,
interference wise. But I've not got any 12v LEDs here.

--
*You are validating my inherent mistrust of strangers

Dave Plowman London SW
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