The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 1986
Filed:
Jan. 02, 1985
Kiyoshi Hiejima, Shiga, JP;
Sanyo Electric Co., Ltd., , JP;
Abstract
An induction heating apparatus comprises a high frequency generation circuit (1) having a heating coil (3), a frequency controlling circuit (10), a duty-cycle controlling circuit (29) and an output setting knob (12). The output setting knob (12) is interlockingly operated with both of the frequency control circuit (10) and the duty-cycle controlling circuit (29) to simultaneously control the oscillation frequency and the duty ratio of the high frequency generation circuit (1). The frequency control circuit (10) has a characteristic of reducing the amount of change in the oscillation frequency of the high frequency generation circuit (1) to be changed in response to change in the volume of adjustment of the output setting knob (12) as the output set by the output setting knob (12) is increased, and the duty-cycle controlling circuit (29) has a characteristic of reducing the amount of change in the duty ratio of the high frequency generation circuit (1) to be changed in response to change in the volume of adjustment of the output setting knob (12) as the output set by the output setting knob (12) is increased.