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:
Aug. 21, 1990
Filed:
Dec. 19, 1988
Bogdan Brakus, Stockdorf, DE;
Herbert Heinzl, Schwabhausen, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A single-ended forward frequency converter which includes a transformer and a storage capacitor C1 wherein the storage capacitor C1 forms a main resonant circuit with an inductance L1 and a series circuit comprising a capacitor C3 and a resistor R1 is connected across the transformer Tr as a demagnetization means. The capacitor C3 of the RC series circuit is selected so that an additional resonant circuit is formed with the capacitor C3 and the shunt inductance of the transformer Tr and wherein the resonant circuit of this circuit is approximately the same as that of the main resonant circuit comprising the inductor L1 and the capacitor C1.