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. 26, 1991
Filed:
May. 15, 1990
Applicant:
Inventor:
Hendrik J Blankers, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
3152 / ; 315224 ; 315307 ; 315D / ;
Abstract
A switched mode power supply for ignition and operation of a high-pressure discharge lamp (5). The switched mode power supply comprises a switching device (1), an inductor (2), capacitive buffer (3) and a rectifier (4) for producing a current through the lamp from an input voltage. In order to supply a switching signal to the switching device, the switched mode power supply is further provided with a control circuit (I). A detector circuit (20) provides current detection of the inductor current and at the same time serves to produce the switching signal.