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A corona discharge is an electrical discharge caused by the ionization of a fluid such as air surrounding a conductor carrying a high voltage. It represents a local region where the air (or other fluid) has undergone electrical breakdown and become conductive, allowing charge to continuously leak off the conductor into the air.
Corona discharge on insulator string of a 500 kV transmission line Corona rings on insulator strings on a 225 kV transmission line in France (left) Grading rings on 1.4 MV X-ray generator at the US Bureau of Standards in 1947.
Corona discharge equipment consists of a high-frequency power generator, a high-voltage transformer, a stationary electrode, and a treater ground roll. Standard utility electrical power is converted into higher frequency power which is then supplied to the treater station.
Therefore, leakage from the terminal determines the maximum voltage attainable. In the Van de Graaff generator, the belt allows the transport of charge into the interior of a large hollow spherical electrode. This is the ideal shape to minimize leakage and corona discharge, so the Van de Graaff generator can produce the greatest voltage.
An electrostatic pinwheel, or corona spinner, attached to a small Wimshurst machine (electrostatic generator) is shown stationary and rotating. Ion wind, ionic wind, corona wind or electric wind is the airflow of charged particles induced by electrostatic forces linked to corona discharge arising at the tips of some sharp conductors (such as points or blades) subjected to high voltage relative ...
The corona-discharge motor, also known as corona motor, has been known for centuries. [1] Nanotube nanomotor ... Class 310 ELECTRICAL GENERATOR OR MOTOR STRUCTURE
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The specific process of using corona discharge to produce gaseous negative ions is to connect the high-voltage negative electrode to a thin needle-shaped wire or a conductor with a very small radius of curvature, so that a strong electric field is generated near the electrode, releasing high-speed electrons. The speed is enough to drive the ...
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