Matsushita Electric Industrial Co., Ltd.

Hiokaki Moriya

Haruo Suenaga

Shinichi Sakai

Daisuke Bessyo

Kazuho Sakamoto

Makoto Mihara

Kenji Yasui

Hideki Omori

Yoshiaki Ishio

Hidetomo Nagata

A high frequency heating apparatus including a circuit for driving a magnetron. A circuit comprises a leakage transformer, a second capacitor connected in series to primary coil of said leakage transformer, a second switching device connected in parallel with a series circuit of said primary coil and second capacitor, a first capacitor connected in parallel with said second switching device, and a first switching device connected in series to said second switching device. Under a structure of the present invention, the switching device and the leakage transformer, both being the key components of the circuit, may respectively be used in common either on a circuit of 200V-240V commercial power supply or on a circuit of 100V-120V commercial power supply. This enables volume production of the key components, which leads to a benefit of reduced cost of the components as well as the cost of heating apparatus.

High frequency heating apparatus

Growing community of inventors

Nara, Japan

Hiokaki Moriya