Wenderoth, Lind & Ponack, L.L.P.
High-frequency inverter and induction cooking device using the same
 A high-frequency inverter having a simple circuit construction capable of executing a constant-frequency operation and a zero-volt switching operation and an induction heating cooker using the high-frequency inverter are disclosed. The high-frequency inverter is comprised of an inverter circuit for converting a direct current from a DC power source into a high-frequency current and a control circuit for controlling the inverter circuit. The inverter circuit is comprised of: a one-transistor inverter constructed of a heating coil whose one terminal is connected to one terminal of a DC power source, a first switching element connected in series between the other terminal of the heating coil and the other terminal of the DC power source, and a first resonance capacitor connected so as to form a resonance circuit with the heating coil; and a series circuit connected in parallel with the heating coil and constructed of a second switching element and a second resonance capacitor. 
Matsushita Electric Industrial Co., Ltd.
Y H H
Y02B H02M H05B
additional inventional inventional
Kamli Hideki Taizo Kiyoshi Takeshi Hidekazu
Mokhtar Omori Ogata Izaki Kitaizumi Yamashita