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. 22, 2025
Filed:
Jun. 14, 2023
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Yuki Ishikura, Nagaokakyo, JP;
Hiroyuki Takatsuji, Nagaokakyo, JP;
Tatsuya Hosotani, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Abstract
A switching power supply device includes an inverter circuit and a noise reduction circuit. The noise reduction circuit includes a first half-bridge capacitor circuit coupled to the DC input line, a second half-bridge capacitor circuit coupled to the AC output line, a first common-mode choke coil coupled between the first half-bridge capacitor circuit and the second half-bridge capacitor circuit, and an electrical path that electrically couples a middle point of the first half-bridge capacitor circuit with a middle point of the second half-bridge capacitor circuit.