JPS56168235A - Temperature controller - Google Patents

Temperature controller

Info

Publication number
JPS56168235A
JPS56168235A JP7306780A JP7306780A JPS56168235A JP S56168235 A JPS56168235 A JP S56168235A JP 7306780 A JP7306780 A JP 7306780A JP 7306780 A JP7306780 A JP 7306780A JP S56168235 A JPS56168235 A JP S56168235A
Authority
JP
Japan
Prior art keywords
power
switching element
heating line
circuit
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
JP7306780A
Other languages
Japanese (ja)
Inventor
Hirokuni Murakami
Yasukiyo Ueda
Takashi Iwasa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7306780A priority Critical patent/JPS56168235A/en
Publication of JPS56168235A publication Critical patent/JPS56168235A/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

Landscapes

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

Abstract

PURPOSE:To remove entirely danger due to short circuit on a switching element by detecting voltage among main electrodes of the switching element controlling a heating line. CONSTITUTION:When a temperature controlling circuit 11 is at a temp. t2 where the supply of power to a heating line 7 is commanded a temperature controlling output signal S1 is outputted at zero voltage of an AC power source 1 to a gate of a switching element 8 to cause the element 8 to conduct and the AC power 1 is supplied to the heating line 7 and simultaneously a synchronizing signal S3 for temperature control is inputted to a gate circuit 23. AT t6, the signal S1 stops and the element 8 turns off. Between t8-t9, despite that the S1 is not made to output, the element 8 is kept at an on-state, an AND of the gate circuit 23 is formed, the outputs becomes ''H'' to turn a protective thyristor 5 on. Hereby, resistance 4 is heated to cause a temperature fuse 3 to open and the power supply to the heat generating line 7 stops.
JP7306780A 1980-05-30 1980-05-30 Temperature controller Pending JPS56168235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7306780A JPS56168235A (en) 1980-05-30 1980-05-30 Temperature controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7306780A JPS56168235A (en) 1980-05-30 1980-05-30 Temperature controller

Publications (1)

Publication Number Publication Date
JPS56168235A true JPS56168235A (en) 1981-12-24

Family

ID=13507616

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7306780A Pending JPS56168235A (en) 1980-05-30 1980-05-30 Temperature controller

Country Status (1)

Country Link
JP (1) JPS56168235A (en)

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