phansonmba

Thanks for your advice. I have been in touch with the PS manufacturer and they have confirmed that there is an issue with the supply. I also believe that this is not an uncommon design problem with switching supplies. So I have returned it and will consider a purely linear supply in future. In electronics you really do get what you pay for.

Here is a screen capture of what I am talking about.

My newly acquired DC regulated switching power supply (Chinese) appears to be sending noise back through my main AC line. I use this power supply to power circuits under test. This is causing interference on both my laptop computer and my AD2 that I run off of it. All of these devices (Power supply, laptop & AD2) are all connected to the same surge-protected power bar to ensure that they all have the same ground potential and to minimize ground loops. Plugging the laptop and AD2 into a different outlet/circuit does not fix the problem. The noise seems to be circulating through my entire AC