Hello,
I'm experiencing electrical noise with the A20 and an A13-LCD-10 screen. I'm using an AC adapter : 220V AC -> 12V DC 2A.
The noise is going through electric wires.
My project aim to use software for ham radio and it's a bit annoying.
Does any body experienced such problem yet ?
Thanks
Florian
Tried ferrite rings etc?
John
I tried the ferrite that goes all around the wire. Nothing improved
There was a thread a while ago, about RF noise generated by the on-board PSU.
You could try this solution https://www.olimex.com/forum/index.php?topic=2205.msg16469#msg16469 (https://www.olimex.com/forum/index.php?topic=2205.msg16469#msg16469) by adding a 0.1uF cap in parallel with C202. I would leave the ferrite ring on there too.
Maybe you could let us know if it helps you?
Cheers,
Chris.
Thank a lot, it worked perfectly great !! No need of the ferrite, the cap is doing great.
Good to know this little trick.
Cheers,
Florian
I've been a bit optimistic ! I got no improvement with the 0.1uf cap!
I moving to this topic : https://www.olimex.com/forum/index.php?topic=2205.0