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From: Bill Sloman <bill.sloman@ieee.org>
Newsgroups: sci.electronics.design
Subject: Re: Rectification
Date: Sun, 3 Nov 2024 00:25:07 +1100
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On 2/11/2024 11:34 pm, Cursitor Doom wrote:
> Greetings mesdammes et messureses,
> 
> Say I'm using a regular jelly bean diode to rectify an AC waveform to
> a light load. Everything's hunky dory at 50hz and the negative
> portions of the wave are neatly removed. I up the frequency to say
> 1khz and all is still well.... and repeat. Eventually I will notice
> that there's insufficient recovery time for the diode to function as
> it formerly was. At still higher frequencies, the inherent capacitance
> of the diode is leaving just a flat DC voltage with no longer any
> peaks visible. If I keep going up and up in frequency, will this
> situation continue indefinitely or will I eventually run into some
> weird unexpected effects like negative resistance/parametric
> amplification etc etc?

Perhaps, but why should anybody care? There are Gunn diodes which do odd 
things at very high frequencies

https://en.wikipedia.org/wiki/Gunn_diode

but they aren't actually rectifying diodes.

> PS: Please don't suggest using a fast recovery diode as that's not
> what the question is getting at. I'm not after a solution to a
> problem, just an answer to this entirely theoretical question.

It's not so much a theoretical question as a theory-free question which 
demonstrates that you don't know enough about electronics to be able to 
know which questions are worth asking.

-- 
Bill sloman, Sydney