The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 17, 1998
Filed:
Mar. 08, 1996
Ernest G Penzenstadler, Herndon, VA (US);
Gungor Aktas, Rockville, MD (US);
Fusion Systems Corporation, Rockville, MD (US);
Abstract
A power supply quickly restarts an electrodeless lamp which is temporarily turned off in an application using microwave radiation generated by a magnetron. When the electrodeless lamp operates in a full power mode, the power supply provides full power to the magnetron via high DC current and high DC voltage. When a user selectively switches the electrodeless lamp off, less power is provided to the magnetron than in the full power mode. In the reduced power mode, the magnetron generates sufficient microwave radiation to maintain the bulb plasma in an ignited condition while the lamp produces substantially no light output. This eliminates the required cooldown delay associated with the lamp shut down and quickly brings the lamp to the full power operation when requested by the user.