On 28/04/2021 13:13, Paul wrote:
Max Demian wrote:

(I've seen idiot YouTube videos describing circuits that control LEDs
with potentiometers, either directly or via a power transistor; it's
inefficient and liable to overheat the pot and/or the transistor as
some of the comments say; also I think that controlling white LEDs in
this way is liable to change the colour of the light.)

Idiot YouTubes:
https://www.youtube.com/watch?v=wns8xrxTYhU
https://www.youtube.com/watch?v=OnjNXhxxc9w


This depends on the situation.

The beauty of design, is keeping an open mind.

It's a matter of whether you like economy and dislike smoke arising from
the circuit.

--
Max Demian