Title: Rapid starting of gas discharge lamps

Abstract: A starting device for a gas discharge lamp, to whose electrodes AC voltage is applied, comprises: A. first means electrically connected with at least one lamp electrode to apply to the lamp a transient voltage pulse which initially changes in amplitude in a polarity direction relatively in opposition to the polarity of the main voltage simultaneously supplied to the electrodes, B. said first means including circuitry to cause said pulse to thereafter change in amplitude in a polarity direction in aid of the polarity of the main voltage simultaneously supplied to the electrodes.

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Inventors: Helmuth, James G. (Monrovia, CA, US)

Application Number: 510440
Filing Date: 1974-09-30
Publication_date: 1976-03-16
Assignee: Chadwick-Helmuth Company, Inc. (Monrovia, CA)
Primary Class(es): 315/205 315/273, 315/276, 315/289, 315/DIG7
Other Classes:
US Patent Ref:

3649869	Mar, 1972	Nomura et al.	315/205.
3681653	Aug, 1972	Snyder	315/176.
3758818	Sep, 1973	Kaneda	315/DIG.
3866088	Feb, 1975	Kaneda et al.	315/DIG.

Other Refs:
Primary Examiner: Demeo, Palmer C.
Assistant Examiner:
Attorney: Haefliger; William W.