JPS5691136A - Controlling circuit of temperature - Google Patents

Controlling circuit of temperature

Info

Publication number
JPS5691136A
JPS5691136A JP16556179A JP16556179A JPS5691136A JP S5691136 A JPS5691136 A JP S5691136A JP 16556179 A JP16556179 A JP 16556179A JP 16556179 A JP16556179 A JP 16556179A JP S5691136 A JPS5691136 A JP S5691136A
Authority
JP
Japan
Prior art keywords
temperature
variable
thermistor
turned
differential
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16556179A
Other languages
Japanese (ja)
Inventor
Takashi Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP16556179A priority Critical patent/JPS5691136A/en
Publication of JPS5691136A publication Critical patent/JPS5691136A/en
Pending legal-status Critical Current

Links

Landscapes

  • Air Conditioning Control Device (AREA)
  • Control Of Temperature (AREA)

Abstract

PURPOSE: To raise accuracy in detection of temperature by constituting a temperature sensor by a thermistor in a temperature controlling circuit for an air conditioner and to enable to change the level and the differential when the apparatus is turned ON and OFF with ease by employing a variable resistor.
CONSTITUTION: A resistor 25 and a thermistor 8 serving as a temperature sensor are connected in series, so that a resistance change of the thermistor 8 is converted into a voltage change and applied to a negative input terminal of a differential amplifier consisting of an operational amplifier 10 and fixed resistors 26W28. To a positive input terminal of the differential amplifier, on the other hand, there is applied the output of a temperature controller consisting of a variable-resistance temperature controller 9 and fixed resistors 23, 24. The output of the differential amplifier is given to comparators C1, C2 including operational amplifiers 11, 12 for effecting on-off control of a compressor relay 17 and a relay 18 for an auxiliary heater on the basis of the output of the comparators C1, C2. Here, the level when the relays are turned ON is controlled by variable resistors 37, 38. Further, the differential when the relays are turned ON and OFF is changed by substituting fixed resistors 29, 33 by variable resistors or the like.
COPYRIGHT: (C)1981,JPO&Japio
JP16556179A 1979-12-21 1979-12-21 Controlling circuit of temperature Pending JPS5691136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16556179A JPS5691136A (en) 1979-12-21 1979-12-21 Controlling circuit of temperature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16556179A JPS5691136A (en) 1979-12-21 1979-12-21 Controlling circuit of temperature

Publications (1)

Publication Number Publication Date
JPS5691136A true JPS5691136A (en) 1981-07-23

Family

ID=15814694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16556179A Pending JPS5691136A (en) 1979-12-21 1979-12-21 Controlling circuit of temperature

Country Status (1)

Country Link
JP (1) JPS5691136A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965323A (en) * 1982-10-06 1984-04-13 Nichirei:Kk Temperature controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965323A (en) * 1982-10-06 1984-04-13 Nichirei:Kk Temperature controller

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