Re: Arduino uno voltage regulator

I have connected my Arduino board with 12 v 1 A adaptor. When I measure the current with multimeter the 5v pin gives 8 v output.

Again I connected to 9v adapter the output is 6.3v. I think there is a problem with the voyage regulator. How can I get 5v output constantly.

Any ideas for this guy's pls help me I am in between a project.

Sounds like you have a bad regulator. You can replace it. Or use an offboard regulator and connect to 5V on the power header.

12V DC, or 12V AC?

CrossRoads:
12V DC, or 12V AC?

You scared me in the moment!

But this can't be. The 12 AC adapter doesn't exist as a product, I think.

..Arnav

ArnavPawarAA:
The 12 AC adapter doesn’t exist as a product, I think.

:smiley: 12V AC mains adapters exist. Think again.

thousiff:
I have connected my Arduino board with 12 v 1 A adaptor. When I measure the current with multimeter the 5v pin gives 8 v output.

Again I connected to 9v adapter the output is 6.3v. I think there is a problem with the voyage regulator. How can I get 5v output constantly.

Any ideas for this guy's pls help me I am in between a project.

What else is connected to your Uno?
To what did you connect it? Barrel, Vin?

TheMemberFormerlyKnownAsAWOL:
:smiley: 12V AC mains adapters exist. Think again.

:smiley: :smiley: Guess what happened if the OP had mistakenly connected 12 AC to the board? :smiley:

But I think that he didn't connect it, I think he bought the DC one and there is probably a problem with the Arduino power adapter.

.. Arnav