Invention Grant
- Patent Title: Power factor correction circuit
- Patent Title (中): 功率因数校正电路
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Application No.: US13740507Application Date: 2013-01-14
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Publication No.: US09030185B2Publication Date: 2015-05-12
- Inventor: Kohei Nishibori , Nadthawut Chalermboon
- Applicant: Minebea Co., Ltd.
- Applicant Address: JP Kitasaku-Gun
- Assignee: Minebea Co., Ltd.
- Current Assignee: Minebea Co., Ltd.
- Current Assignee Address: JP Kitasaku-Gun
- Agency: Oliff PLC
- Priority: JP2012-026505 20120209
- Main IPC: G05F1/56
- IPC: G05F1/56 ; G05F1/70

Abstract:
A power factor correction circuit includes a first series circuit, a second series circuit, a smoothing capacitor, and a reactor. The power factor correction circuit further includes an input voltage detector that detects an input voltage of at least one end of an AC power source based on one end on a ground side of the smoothing capacitor, and a current detector that detects a reactor current from the AC power source, the current detector having a transformer in which the reactor is a primary side, and first and second switching elements are controlled based at least partially on a reactor current detection signal that is output in accordance with the reactor current from a secondary side of the transformer to supply a desired DC voltage to a load circuit.
Public/Granted literature
- US20130207621A1 POWER FACTOR CORRECTION CIRCUIT Public/Granted day:2013-08-15
Information query
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