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. 05, 2005
Filed:
Jun. 26, 2003
Applicant:
Michael Weirich, Unterhaching, DE;
Inventor:
Michael Weirich, Unterhaching, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B041/24 ; H02M005/41 ; H02M003/335 ;
U.S. Cl.
CPC ...
Abstract
The invention relates to a supply circuit for a load, and in particular to an electronic ballast for a lamp having such a supply circuit. In order to drive a switching transistor Tof the supply circuit, a forcing circuit ZS is used which is supplied by the supply circuit. At the start of operation, an oscillation of an oscillator circuit OS, which can preferably serve as an amplifier for the forcing circuit ZS in the continuous operating mode, is used for driving.