Can a high-Vdc power supply be an electrostatic generator?

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SUMMARY

A high voltage DC power supply can effectively function as an electrostatic generator to place equal but opposite charges on two identical conductors. The discussion highlights the use of a Van de Graaff generator, which utilizes the triboelectric effect, as a traditional method for achieving static charge. However, it is clarified that any DC voltage source, including low-voltage batteries, can create a charge differential between terminals. Thus, a high voltage DC power supply is not a prerequisite for generating static electricity.

PREREQUISITES
  • Understanding of electrostatics and charge distribution
  • Familiarity with the triboelectric effect
  • Knowledge of high voltage DC power supply operation
  • Basic principles of electrical circuits
NEXT STEPS
  • Research the operation and applications of Van de Graaff generators
  • Explore methods for generating static electricity using DC power supplies
  • Learn about the triboelectric series and its implications in electrostatics
  • Investigate safety protocols for working with high voltage equipment
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Electronics enthusiasts, electrical engineers, and educators interested in electrostatics and static charge generation techniques.

uby
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Hello all,

I am interested in placing a static charge on a conductor by means of an electrical circuit. One way to do this is by means of a Van de Graaff generator which uses the triboelectric effect to generate net charges, then places them onto two conductors having equal but opposite charges. For example, connecting a conductor to the metal sphere at the top of a typical Van de Graaff generator would result in charging of that conductor to the same potential as the sphere.

I'd like to perform the same experiment using a device without moving parts, if possible. I have a high voltage DC power supply available: is there any way this can be used as an electrostatic generator to place equal but opposite charges on two identical conductors?

Thanks!
 
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Yes, any DC supply can do that. I think you have the misconception that you must have high voltage, to achieve a charge. Any DC voltage, even a AA, battery puts a nonzero charge on one terminal relative to the other terminal.
 

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