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Title:
TRIAC CONTROLLER AND HEATING COOKER
Document Type and Number:
Japanese Patent JP2014053994
Kind Code:
A
Abstract:

To provide a triac controller which can suppress the deviation of drive timing of a triac by a simple configuration, and can achieve stable operation of a load.

A counter (101b) repeats count operation from an initial count "1" for each AC voltage rising zero-cross point detected by a zero-cross detection unit (11). When the count of the counter (101b) reaches the end count "20" before the AC voltage rising zero-cross point, a triac control unit (101a) turns a gate drive signal on for a predetermined period, and when the count of the counter (101b) becomes the initial count "1" immediately after the rising zero-cross point, turns a gate drive signal on for a predetermined period. When the count of the counter (101b) becomes an intermediate count "10", the triac control unit (101a) turns a gate drive signal on for a predetermined period.


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Inventors:
YAMAMOTO OSAMI
UCHIYAMA MASAYA
Application Number:
JP2012194997A
Publication Date:
March 20, 2014
Filing Date:
September 05, 2012
Export Citation:
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Assignee:
SHARP KK
International Classes:
H02M1/08; G05F1/44
Domestic Patent References:
JPH10214687A1998-08-11
JPS6311061A1988-01-18
JPH0473523A1992-03-09
Attorney, Agent or Firm:
Hiroshi Yamazaki
Mitsuo Tanaka
Yukinori Nakakura
Etsuko Isoe



 
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