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. 24, 2012
Filed:
Mar. 18, 2008
Masakazu Katou, Osaka, JP;
Ryou Nakamoto, Osaka, JP;
Keisuke Shimatani, Osaka, JP;
Keiichi Yoshisaka, Osaka, JP;
Masafumi Hashimoto, Osaka, JP;
Masakazu Katou, Osaka, JP;
Ryou Nakamoto, Osaka, JP;
Keisuke Shimatani, Osaka, JP;
Keiichi Yoshisaka, Osaka, JP;
Masafumi Hashimoto, Osaka, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
An electric power supply circuit includes a diode bridge circuit () for rectifying an alternating current, a switching element (S) for causing a short-circuit for output power of the diode bridge circuit (), and a PAM control section () for causing the switching element (S) to perform switching with a predetermined timing so that a waveform of an input current approximates to a sine wave. The PAM control section () outputs ON/OFF pulses so that five pulses are output for each zero-cross point and one of the five pulses located in center extends over the zero-cross point at any time.