Driving method of discharge apparatus

Details Driving method of discharge apparatus Driving method of discharge apparatus

1996-06-24

1998-10-27

Pascal, Robert J.

Electric lamp and discharge devices: systems

Plural power supplies

315168, 3151691, 315337, H05B 3700

Patent

active

058281800

ABSTRACT:
In order to operate a discharge apparatus, a first voltage having a first frequency is applied to electrodes. Moreover, a second voltage having a second frequency higher than the first frequency is applied to the first voltage. The waveform of the voltage having the second frequency may be an attenuated one which is synchronized with the first frequency. As a result of this voltage superposition, the electrons, ions, or plasma in the already established discharge fluctuate with the change in the electric field. If the second frequency is selected to be equal or close to the resonance frequency of the electrons, ions, or plasma existing in the already established discharge, there occurs the resonance phenomenon of the electrons, ions, or plasma. This phenomenon raises the temperature of those particles. As a result, the electron temperature approaches to a value preferable for emission of visible light or ultraviolet rays so that the luminous efficiency is improved.

REFERENCES:
patent: 4081715 (1978-03-01), Uemura
patent: 4461978 (1984-07-01), Mikoshiba et al.
patent: 5233272 (1993-08-01), Whang et al.
patent: 5463274 (1995-10-01), Winsor

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