The return current is 'dragged along' through Faraday's secomd law of induction; it induces a voltage wavelet in the ground plane directly under the current front travelling down the trace. Glad you are doing this video. I am shocked at how many companies are getting this wrong today. I have a 50 page presentation of layout errors I have seen in production.
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The return current is 'dragged along' through Faraday's secomd law of induction; it induces a voltage wavelet in the ground plane directly under the current front travelling down the trace. Glad you are doing this video. I am shocked at how many companies are getting this wrong today. I have a 50 page presentation of layout errors I have seen in production.
brilliant. so the loop area that you calculated the inductance is between the forward path and return path? it is not just the path(wire)?
Yes, you always need the whole loop area of the current path, to estimate the inductance.