On 3/29/2016 5:59 PM, Elliott Martinson wrote:
But noise is chaotic, and subsequent measurements of the L conductor only won’t even be exactly the same. The phase relationships of different noise signals from different sources in the device are constantly changing depending on when the measurement was made as well.
It's not "noise," though, in the classical sense -- and it can be distinguished by frequency and (in the time domain) by waveform. For one examples see my photo at https://www.flickr.com/photos/101461001@N06/25883518240/in/dateposted-public/ f
I had been called out of retirement on contract, and brought in my own o'scope, since the lab's equipment was all in use. The ringing waveform was the signal from a LISN (into 50 Ohms) and the waveform below it was taken with a suitably insulated scope probe near the SMPS causing the problem.
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