This question is probably going to lead down a very deep rabbit hole but here goes.
As a ham radio operator I have been dealing with a growing number of electrical devices that radiate noise across various parts of the radio spectrum. The solution has most often been to wrap the power cord of the device around a Ferrite core a few times (or more) which surpasses the noise.
What effect does the Ferrite have on the signals that Sense uses for device identification?
What you are suppressing is harmonics.
Sense detects voltage/amps/phase differences at a 50/60 Hz signal.
It does that by sampling (just a number) 20,000 times a second but it is not looking for Mhz components of the signal.
Would like to be corrected if I am totally wrong
Should have asked what frequency you are experiencing the interference.
I assume the ferrite cores are low pass filters?
I think the ferrite helps dampen Mhz plus harmonics from the power supply ? As @dannyterhaar suggests, Sense is really looking at aspects of the 60Hz power ramp. So probably shouldn’t affect detection.
Most of the interference I am seeing is in the 3 and 7 MHz portions of the radio spectrum.
Switching power supplies and “wall warts” are the worst offenders.
I didn’t think the ferrites should have any effect but since I have been working hard on cutting down the RFI my Sense seems to have had a significant slowdown in device discovery. I am definitely willing to chalk that up to coincidence and bias because I am my paying more attention to discovery.
