Where/when was NC first reported in impedance (Z) studies of electronic devices (circuits)? I am looking for the first article(s) where it was both observed in AC measurements, and also named "NC" (Apparently, the interpretation of Z measurements could be tricky, and the same thing can be attributed [correctly or not] to different causes. So, please do not mention cases where, in your view, the NC was observed but named differently).
Probably in 1948 by Tellegen, when he proposed the gyrator, if you consider the case where it's driven by AC.
Thank you, Mark. Did you mean this article:
https://nonstopsystems.com/radio/pdf-hell/article-tellegen-gyrator.pdf ?
Best.
M
Well, I was looking for a reference were it was reported. Any way, the article looks interesting, thank you for the lead.
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