JPS576910A - Temperature controller - Google Patents

Temperature controller

Info

Publication number
JPS576910A
JPS576910A JP8113980A JP8113980A JPS576910A JP S576910 A JPS576910 A JP S576910A JP 8113980 A JP8113980 A JP 8113980A JP 8113980 A JP8113980 A JP 8113980A JP S576910 A JPS576910 A JP S576910A
Authority
JP
Japan
Prior art keywords
comparator
loads
change
heat
temperature
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
JP8113980A
Other languages
Japanese (ja)
Inventor
Hiroshi Takahashi
Kikuo Wakasugi
Hideo Kasuga
Kiyoshi Watanabe
Hiroshi Matsuzaki
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 Heating Appliances Co Ltd
Hitachi Netsu Kigu KK
Original Assignee
Hitachi Heating Appliances Co Ltd
Hitachi Netsu Kigu KK
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 Heating Appliances Co Ltd, Hitachi Netsu Kigu KK filed Critical Hitachi Heating Appliances Co Ltd
Priority to JP8113980A priority Critical patent/JPS576910A/en
Publication of JPS576910A publication Critical patent/JPS576910A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
    • G05D23/1932—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Remote Sensing (AREA)
  • Control Of Temperature (AREA)

Abstract

PURPOSE:To realize a constant control of temperature regardless of an increase/ decrease of load for a temperature controller of an electric blanket or the like, by connecting each point of connection of plural temperature detecting circuits consisting of a series circuit of a heat-sensitive element and a resistance to an input terminal of a comparator via a change-over switch. CONSTITUTION:Impedance elements 23, 24 and 25 of the heat-sensitive elements or the like are provided close to loads 35, 36 and 37 which function as the heat generating conductors; and the number of power supply loads can be increased or decreased when necessary by change-over switches 26, 27 and 28. These impedance elements are connected in series toresistances 20, 21 and 22 and then to a power source, and these points of connection are connected to an input terminal of a comparator 31 via the switches 26, 27 and 28. The output of the comparator 31 drives a relay 34 via a transistor 32 to supply the power source to the load. As the ratio between the impedance element and the resistance is controlled to a constant value, the set temperature does not change regardless of the number of the connected loads.
JP8113980A 1980-06-16 1980-06-16 Temperature controller Pending JPS576910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8113980A JPS576910A (en) 1980-06-16 1980-06-16 Temperature controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8113980A JPS576910A (en) 1980-06-16 1980-06-16 Temperature controller

Publications (1)

Publication Number Publication Date
JPS576910A true JPS576910A (en) 1982-01-13

Family

ID=13738062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8113980A Pending JPS576910A (en) 1980-06-16 1980-06-16 Temperature controller

Country Status (1)

Country Link
JP (1) JPS576910A (en)

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