Title:
HIGH-FREQUENCY HEATER
Document Type and Number:
Japanese Patent JP2001208873
Kind Code:
A
Abstract:
To provide a timer apparatus for a high-frequency heater, free from the exchange of a mechanical timer, in which a synchronous motor is used, according to a power supply frequency.
As a timer 7, a rated one for 50 Hz is used. A timer adjusting device 21 judges a working power supply frequency, and if the frequency is 60 Hz, the revolution number of a timer motor is controlled so as to equalize its time interval to that of 50 Hz. Therefore, the timer apparatus is made to be free from exchange or the like according to the power supply frequency.
Inventors:
ORITA MASATOMO
SEKINO NOBUO
SEKINO NOBUO
Application Number:
JP2000016742A
Publication Date:
August 03, 2001
Filing Date:
January 26, 2000
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G04F3/00; F24C7/02; H05B6/68; (IPC1-7): G04F3/00; F24C7/02; H05B6/68
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)
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