Title:
TEMPERATURE CONTROL CIRCUIT OF ELECTRIC HEATER
Document Type and Number:
Japanese Patent JPS5840630
Kind Code:
A
Abstract:
PURPOSE:To shorten the time of a temperature rise up to a desired set point without re-setting a temperature setting dial in the middle, by putting a timer in operation for a prescribed time by the 1st output of a switching circuit which controls a heat source driving circuit. CONSTITUTION:The 1st output L for turning off a transistor 11 among output signals of a switching circuit 10 is received to output an output H from a timer 13 for a prescribed time. Then, a reference value inputted to the switching circuit 10 by the output H of the timer 13 is corrected to a value made lower by a prescribed correction value than a value which corresponds to set temperature. While the timer 13 is in counting operation, temperature higher than the desired temperature is regarded as target temperature and a temperature control circuit is operated to shorten the time of a temperature rise.
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Inventors:
NARUO MASAYUKI
Application Number:
JP13930581A
Publication Date:
March 09, 1983
Filing Date:
September 03, 1981
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G05B11/14; G05D23/24; (IPC1-7): G05B11/14; G05D23/19
Attorney, Agent or Firm:
Miyai Akio