Unfortunately people don't know how to operate even a potentiometer today :o
rtek1000:
Unfortunately people don't know how to operate even a potentiometer today :o
A multi-turn pot might explain the OP's problem.
Yes, it is quite hard to understand the problem with that information only.
Cheers,
Kari
https://www.mpja.com/Micro-Adjustable-Step-Down-Buck-DC_DC-Converter-3A/productinfo/35371+PS
It's a crappy cheap preset pot. (Their video says as much)
Have used a few as secondary step downs.
All still working flawlessly.
But those cheap trimmers are not for regular adjustment.
Set and leave alone
Bob.