How can I prevent breakdown in my electrostatic generator's output wires?

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Discussion Overview

The discussion revolves around methods to prevent breakdown in the output wires of an electrostatic generator, specifically focusing on high-voltage, low current sources. Participants explore various types of generators and their characteristics, as well as practical considerations for achieving multiple output wires capable of attracting small objects.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant suggests creating a high-voltage, low current source with multiple output wires for attracting tiny pieces of paper.
  • Another participant recommends looking into a Van de Graaff generator as a solution for generating high voltages.
  • A question is raised about the feasibility of finding a capacitor to store the charge generated by a Van de Graaff generator.
  • Some participants mention alternative methods, such as friction machines or air ionizers, for generating high voltage.
  • It is noted that Van de Graaff generators can produce very high voltages with minimal current, and their design allows them to hold high voltage without breakdown.
  • Concerns are expressed regarding the impact of attaching wires to the Van de Graaff sphere, which may drain charge and lead to corona discharge at the wire tips.

Areas of Agreement / Disagreement

Participants present multiple competing views on the best approach to achieve the desired output from an electrostatic generator, and the discussion remains unresolved regarding the optimal methods and considerations for preventing breakdown.

Contextual Notes

Participants mention the importance of the shape of the generator in preventing breakdown, specifically noting that breakdown is inversely proportional to the local radius of curvature of the conductor. There are also unresolved questions about the practicality of using capacitors with these generators.

Who May Find This Useful

This discussion may be useful for individuals interested in electrostatic generators, high-voltage applications, and those exploring practical solutions for generating and managing static electricity.

emmettal
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I'd like to create a high-voltage, low current source having multiple output wires each capable of attracting tiny pieces of paper. What kind of solutions should I look into?
 
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Welcome to PF;
Look up "van der graaf generator".
 
Seems the old-school way is the best, right.
BTW do you think it's worth bothering finding a capacitor capable of storing the charge generated by v. d. Graaf generator or it's a hopeless task?
 
Last edited:
Why do you need multiple output wires?
Anyway, you could also try some kind of friction machine or - if you want an electronic device - an air ionizer.
 
Van De Graaff generators are easy ways to generate high voltages with practically no current. If you have the financial means you can easily generate one million or more volts with a VDG generator. It's basically static electricity generated from friction that is transported to a large metal sphere where it is stored.
 
emmettal said:
I'd like to create a high-voltage, low current source having multiple output wires each capable of attracting tiny pieces of paper. What kind of solutions should I look into?
Look up Kelvin water dropper. Have fun!
 
emmettal said:
... having multiple output wires ...

Be aware that electrostatic generators, like Van De Graaff, are able to hold very high voltage without breakdown thanks to their shape: smooth and round. Breakdown is inversely proportional to the local radius of curvature of the conductor (assuming we are dealing with bare conductor in air).

If you attach a wire your Van De Graaff sphere, you will drain off most of the charge.
If you turn off the lights, you will be able to observe the corona discharge occurring at the tip of the wire.
 

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