On Component Power Supply Interactions

[Spannko]

Here’s a spectrogram of a typical SMPS taken on the power grid side of a power strip.

6C344CFE-1AAD-469A-BF75-0EB8A05DA219.jpeg

Here’s one of a typical LPS:

C510EFE3-9D5A-403E-93F3-455CEE7DD0E4.jpeg

This is what happens when several power supplies are plugged into one power strip:

It appears as though multiple power supplies interact with one another in unpredictable ways and I can imagine some power supplies working in a complementary way, and some not working together so well. Could this be one of the factors which affects successful system matching? And if so, is this a good reason for components with power supplies being designed to work as part of a “closed system” from the outset?

[FairPlayMotty]

Very interesting Spannko!

https://www.youtube.com/watch?v=BFLZm4LbzQU&t=1146s

This is long but very informative.