Acoustic resonance arc stabilization arrangement in a discharge

Details Acoustic resonance arc stabilization arrangement in a discharge Acoustic resonance arc stabilization arrangement in a discharge

1993-03-11

1994-04-26

Kwon, John T.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Induction-type discharge device load

315 39, 315283, 315344, 313517, H05B 4129

Patent

active

053069870

ABSTRACT:
An arc stabilization arrangement for a discharge lamp having a light transmissive arc tube containing a fill of gas excitable to a discharge state upon introduction thereto of a drive signal having a predetermined frequency associated therewith, includes a modulating arrangement effective for providing a modulating signal which is imposed onto the drive signal. The modulating signal has a frequency associated therewith which approximates the acoustic resonance of the gases within the fill, such modulating signal frequency being less than the frequency of the drive signal. In one embodiment of the invention the modulating arrangement is an amplitude modulating scheme effective such that a modulating amplitude of greater than about 5% of the amplitude of the drive signal is achieved. In yet a further implementation of the present invention, the frequency of the modulating signal is swept about a range of frequencies so that a varying acoustic resonance frequency can be encompassed by the modulating signal.

REFERENCES:
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patent: 5107185 (1992-04-01), El-Hamamsy et al.
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patent: 5187412 (1993-02-01), El-Hamamsy et al.
patent: 5243261 (1993-09-01), Bergervoet et al.
patent: 5248918 (1993-09-01), Dakin et al.

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