On 17/01/2018 16:20, Graham. wrote:
On Wednesday, 17 January 2018 04:55:22 UTC, Johnny B Good wrote:
On Tue, 16 Jan 2018 22:00:09 +0000, John Rumm wrote:


sounds like you're not up to date with the latest generation of LED lighting drivers. Not finding the link but basically they switch which LEDs are on according to the momentary mains voltage.

but if Big Clive Mitchell
isn't aware of it, it's not happening. ;-)



https://youtu.be/KKd2L9Exw0M?t=127

BUT watch to around 9 minutes.


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