RF energy between charged plates?

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Discussion Overview

The discussion revolves around the presence of RF energy between two parallel conductive plates charged to a high voltage by a HVDC power supply. Participants explore potential causes for this phenomenon, including field emission and other electrical effects.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant suggests that field emission at the cathode could be a plausible cause for the RF energy observed between the plates.
  • Another participant mentions eddy currents as a possible factor, although they do not claim expertise in physics.
  • A different participant notes that the RF observed is not merely noise and relates the highest amplitude frequency to the distance between the plates.
  • One participant explains that applying high voltage to a conductive material can induce a voltage across another nearby conductive material.
  • Another participant proposes that the RF energy could be due to corona discharge, referencing external information on the topic.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the cause of the RF energy, with multiple competing views and hypotheses presented.

Contextual Notes

Participants express varying levels of understanding of the underlying physics, and some claims depend on assumptions about the behavior of electrical phenomena in high-voltage scenarios.

Who May Find This Useful

Individuals interested in high-voltage physics, electrical engineering, and the behavior of conductive materials in electric fields may find this discussion relevant.

hobbs125
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I have two parallel conductive plates.
The plates are charged to a high voltage by a HVDC power supply.

When the plates are charged rf energy is present between them.

What could be causing this?
I am thinking field emission at the cathode is causing it ,but not really understanding physics is that plausible?

What do you guys think? What could be the cause of rf occurring between two plates charged to a high dc voltage?
 
Last edited:
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Eddy Currents, Whatcha trying to do? I'm not a physicist btw.
 
Just playing around with high voltage and noticed rf on my oscope while applying a high voltage to parallel plates... wondering what is causing it?

I know it's not just noise from a nearby source and know that it's coming from between the plates. ... also I noticed it's highest amplitude frequency is related to the distance between the plates
 
Last edited:
If you are applying a high voltage to a conductive material, you can induce a voltage across another if it's close, same reason why metal stuff next to a magnet becomes magnetized
 

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