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:
Sep. 18, 2001
Filed:
Jun. 20, 2000
Masayoshi Sasaki, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
The switching converters of a power supply device are adapted to equally share the power output of the device. The power supply device,comprises a plurality of resonance type switching converters,connected in parallel relative to a load, frequency control circuits,for controlling respectively the switching frequencies of the switching converters,, a feedback circuit,for feeding back the voltage applied to the load and a resonance current balance circuit,for detecting the wave heights of the resonance currents flowing respectively through the switching converters,and comparing them. The frequency control circuits,control the switching frequencies so as to make the voltage applied to the load show a predetermined voltage value and also make the wave heights of the resonance currents equal to each other.