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AC200P annoying high frequency noise (16kHz)

Goeggi

New Member
Joined
Oct 24, 2021
Messages
3
Hello,

I have recently purchased a Poweroak AC200P.
Mine makes a high frequency noise when the AC output is on. It sounds like an old CRT TV.
Here is the video of it:

Can anyone put their ear to it and see if they hear a high frequency noise?
Becuase it is high frequency (around 16kHz) so only 'younger' people hear it.
With a frequency spectrum app on your smartphone you can make it visible even if you can't hear it yourself.
It looks like this:
Noise.jpeg

Would be really great if someone could give a short feedback.
Greetings
 
I already thought that it was coil whine. It sounds similar to my graphics card.

But my question is whether only my AC200P is affected or all of them?
 
Hi,
i have also a AC200P EU Version.
The Coil whine is very quiet.
I can hear it quietly at a distance of 20cm. But it is not disturbing and normal.

Measured on the left side at fan height in a distance of 10cm from the microphone. AC ON, DC OFF, no load, no Charging
Screenshot_20211029-131401_Spectroid.jpg
 
Thanks for the app screenshot. I downloaded the same app as you. There the coil whine is also displayed to me at 14.7kHz. I think it is safe to say that at least every EU version is affected. (230V/50Hz)
 
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