Hi
ADJUSTABLE SWITCHING POWER SUPPLY MODULE IN 4V-35V OUT 1.5V-30V LM2596S
have an input of 9 volts but adjusting the multi turn pot won’t adjust the output at all. Have tried 3 units all with same problem, any ideas…
Hi Grahame,
How many times are you turning the trim pot? If I remember correctly these take 22 turns to go through their full travel. What output are you getting with a 9V input? Can you provide me a photo of how they are wired up?
Hi
You are correct with the 22 turns (maybe more), I found if you turn it enough it does adjust, although all the adjustment is right at one end of the trim pot. Thanks for your help.
Regards Grahame
Grahame,
Thanks for getting back to me! You aren’t the first person to ask about this one!
Good luck on your project!
