High-frequency heating apparatus including ringing effect suppre

Details High-frequency heating apparatus including ringing effect suppre High-frequency heating apparatus including ringing effect suppre

1989-08-25

1993-04-20

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1077, 219 10493, 363 21, 363 97, 323289, H05B 668, H05B 608

Patent

active

052045048

ABSTRACT:
In an inverter type high frequency heating apparatus such as an electromagnetic cooker and a microwave oven, an insulated gate bipolar transistor is employed as a switching element. A parallel circuit arranged by a capacitor and a resistor is interposed between a gate electrode of the gate insulated bipolar transistor and a gate driver circuit so as to prevent a power loss, or ringing effect when the gate insulated bipolar transistor is turned off.

REFERENCES:
patent: Re32904 (1989-04-01), Pacholok
patent: 4312029 (1982-01-01), Zellmer
patent: 4630186 (1986-12-01), Kudo
patent: 4882663 (1989-11-01), Nilssen
patent: 4900884 (1990-02-01), Aoki
patent: 4903182 (1990-02-01), Pilukaitis et al.
patent: 4954917 (1990-09-01), Wirth
H. Yamashita et al., "An Induction Heating Single Ended Push-Pull Resonant Inverter Using IGBT, " PCIM'88 Proceedings, 1988, pp. 82-90.

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