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:
Jan. 13, 2015
Filed:
Jan. 10, 2012
Paolo DE Anna, Vallà di Riese Pio X, IT;
Daniele Luccato, Vittorio Veneto, IT;
Paolo De Anna, Vallà di Riese Pio X, IT;
Daniele Luccato, Vittorio Veneto, IT;
Osram AG, Munich, DE;
Abstract
An electrical supply device may include a transformer with a secondary winding to feed a current to a load; control circuitry for the device; an auxiliary supply source for said control circuitry. The auxiliary supply source may include an output capacitor across which a supply voltage is provided for said control circuitry; at least one charge accumulation capacitor to be traversed by the current fed to said load; a comparator sensitive to the voltage on said at least one charge accumulation capacitor; and a switch interposed between said at least one charge accumulation capacitor and said output capacitor, said switch coupled to said comparator, whereby when the voltage on said at least one charge accumulation capacitor reaches a reference level, said switch couples said at least one charge accumulation capacitor to said output capacitor by transferring onto said output capacitor the charge on said at least one charge accumulation capacitor.