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:
Dec. 25, 2012
Filed:
Nov. 18, 2009
Haruo Suenaga, Osaka, JP;
Kenji Yasui, Nara, JP;
Shinichi Sakai, Nara, JP;
Nobuo Shirokawa, Nara, JP;
Hideaki Moriya, Nara, JP;
Manabu Kinoshita, Nara, JP;
Haruo Suenaga, Osaka, JP;
Kenji Yasui, Nara, JP;
Shinichi Sakai, Nara, JP;
Nobuo Shirokawa, Nara, JP;
Hideaki Moriya, Nara, JP;
Manabu Kinoshita, Nara, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A power control method for high-frequency dielectric heating is provided. The method includes detecting input current and input voltage from an AC power supply. Input current waveform information and input voltage waveform information are acquired. It is determined whether the magnetron is being oscillated. If so, the input voltage waveform information is added to the input current waveform information until oscillation of the magnetron is detected, and the addition result is converted into the drive signal of a switching transistor of an inverter circuit. If not, the input current waveform, without addition of the input voltage waveform, is converted into the drive signal of the switching transistor of the inverter circuit.