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:
Jul. 31, 1990
Filed:
Apr. 12, 1988
Applicant:
Inventor:
Kazumi Masaki, Osaka, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
315307 ; 315205 ; 315208 ; 315362 ;
Abstract
Disclosed is a novel lamp-lighting device, comprising a full-wave rectifier having both an input terminal connected with an ac source and an output terminal connected with a lamp, a smoothing means connected in parallel with the lamp, means to detect a voltage across the lamp that exceeds a prescribed level, means to switch the operation of said rectifier to half-wave rectification mode, and means to connect said switching means with said detecting means.