Did not read the entire thread, so if it is already mentioned I beg for mercy.
Please, Lord have mercy on my I am a sinner, if you are illuminating the Lab with LED
DO NOT use cheap ass LED driver/bulbs from china!
I did, they looked and felt okay in my hands.... but when I turn them on my scope can't trigger anymore in a stable way.
They crap my entire Lab with EMI like an AM radio tower from the '60.
No it's not noise from the mains lines, it's something related to the secondary and no matter how many C or L I out on the output it is always there.
Since they were slim design, they did not care about the loop area after the high voltage trafo...
Yes I tried with ferrite clamps but it's like curing a cancer patient with orange juice.
Yes I tried with alu tape, but no joy.
Tons of video on YT, this is the one I like the most
EDIT: I just bought some nice and $$$ Mean Well RSP series PSU.... I let you know how they goes....