Transformers and Power Traces

Thread Starter


Joined Jan 13, 2018
I suspect some parts of my understanding about this system are wrong and was wondering if someone could help correct me where I am mistaken, I'm not sure which part of my understanding is wrong:

If a transformer works by generating a magnetic field because of a changing current, how is it possible that a transformer can pickup parasitic power from a nearby high power DC power trace? Are transformers or inductors only problematic near PCB traces that have AC signals or can they be a problem when placed near high power DC traces? If a transformer or inductor can be a problem near a DC trace, how is that possible because the current isn't alternating?

Not sure what or how much of this is true. Any advice appreciated, thanks in advance!