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:
Dec. 25, 2001
Filed:
May. 22, 2000
Applicant:
Inventors:
Noboru Yamamoto, Kariya, JP;
Kenji Yoneima, Kariya, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/00 ;
U.S. Cl.
CPC ...
G05F 1/00 ;
Abstract
A discharge lamp control circuit for a vehicular lamp uses a starting circuit capacitor that is charged by the same high voltage generator used later as the lamp's power source after it is turned on. As a result, no separate dedicted starting transformer is necessary. Further, a thyristor and diode are used in the starting circuit in place of a spark-gap for initially activating the discharge lamp.