Title:
HEATER TEMPERATURE CONTROL CIRCUIT
Document Type and Number:
Japanese Patent JPS6354614
Kind Code:
A
Abstract:
PURPOSE:To comfortably control a room temperature by providing a correcting means for obtaining a heater set temperature correcting effect of almost the same value against a variation of an ambient temperature, irrespective of a set temperature of a heater. CONSTITUTION:An output of an amplifier A1 passes through a double variable resistance VR and a resistor R11, and thereafter, corrected by an output voltage of a room temperature correcting amplifier A2, which is given through the double variable resistance VR and a resistance R10. In this state, when a value of the resistance R10 is selected to the same value as a value of the variable resistance VR, when a temperature has been set to 'weak', the output of the amplifier A2 is transferred by RVR+ R10=2RVR, and when a temperature has been set to 'strong', the output of the amplifier A2 is transferred by only the resistance R10. That is to say, a degree of correction influence of the output voltage of the room temperature correcting differential amplifier A2 can be set to two times when the temperature has been set to 'strong', comparing with the time when the temperature has been set to 'weak'. Accordingly, a sensitivity difference of a variation rate of a temperature converting signal by setting of a heater temperature can be offset, and the correction can be equalized.
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Inventors:
NARUO MASAYUKI
UCHINASHI SAKAE
UCHINASHI SAKAE
Application Number:
JP19929186A
Publication Date:
March 09, 1988
Filing Date:
August 25, 1986
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G05D23/19; G05D23/24; (IPC1-7): G05D23/19; G05D23/24
Domestic Patent References:
| JPS56109478A | 1981-08-29 |
Attorney, Agent or Firm:
Toshio Takayama