Title:
MAGNETRON DRIVING POWER SUPPLY
Document Type and Number:
Japanese Patent JP2013069610
Kind Code:
A
Abstract:
To provide a magnetron driving power supply capable of operating at a high power factor without being affected by variation in the type or characteristics of a magnetron if any.
A voltage of an AC power supply 20 is rectified. Any one having a larger amplitude of input voltage waveform information 92 and input current waveform information 91 of an inverter circuit 300 transmitting a power by high-frequency switching is selected. The selected information is superposed onto power control information 93 by means of a mix circuit 73 to perform pulse width modulation of on/off-switching of a switching transistor 37, and a signal amplitude is switched between in start-up control and in normal control.
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Inventors:
YASUI KENJI
MORIYA HIDEAKI
SUENAGA HARUO
MORIYA HIDEAKI
SUENAGA HARUO
Application Number:
JP2011208581A
Publication Date:
April 18, 2013
Filing Date:
September 26, 2011
Export Citation:
Assignee:
PANASONIC CORP
International Classes:
H05B6/68
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Kentaro Fujii
Daisuke Nagano
Kentaro Fujii