JPS56168233A - Temperature controller - Google Patents

Temperature controller

Info

Publication number
JPS56168233A
JPS56168233A JP7306580A JP7306580A JPS56168233A JP S56168233 A JPS56168233 A JP S56168233A JP 7306580 A JP7306580 A JP 7306580A JP 7306580 A JP7306580 A JP 7306580A JP S56168233 A JPS56168233 A JP S56168233A
Authority
JP
Japan
Prior art keywords
heater
vcc
voltage
temperature
comparator
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
JP7306580A
Other languages
Japanese (ja)
Inventor
Yasukiyo Ueda
Hirokuni Murakami
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 JP7306580A priority Critical patent/JPS56168233A/en
Publication of JPS56168233A publication Critical patent/JPS56168233A/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
    • G05D23/2401—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 using a heating element as a sensing element

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 reduce generated noise by converting a current flowing through a sensor to voltage to peak hold it in the other half wave of a feeding cycle to a heater. CONSTITUTION:When temperature of a heater 2 is low, its impedance ZT is high, consequently collector current IC is small and peak holding voltage VT attains to a value close to DC voltage Vcc for a circuit. When temperature of the heater 2 becomes high the VT drops from the VCC. Further, when a zero pulse generating circuit 20 is not actuated, a TR25 is on, thereby a temperature setting voltage VS is raised to the VCC, and an output VO of a comparator 24 is made to be Low, but when a zero pulse is generated to make VZ to the VCC, the TR25 turns off to lower the the VS. At this time, if VT>VS, the output VO of the comparator is increased to the VCC to trigger the power controlling element 9 through a resistance 26 and the heater 2 is permitted to conduct. When VT<VS,the heater 2 does not conduct.
JP7306580A 1980-05-30 1980-05-30 Temperature controller Pending JPS56168233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7306580A JPS56168233A (en) 1980-05-30 1980-05-30 Temperature controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7306580A JPS56168233A (en) 1980-05-30 1980-05-30 Temperature controller

Publications (1)

Publication Number Publication Date
JPS56168233A true JPS56168233A (en) 1981-12-24

Family

ID=13507563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7306580A Pending JPS56168233A (en) 1980-05-30 1980-05-30 Temperature controller

Country Status (1)

Country Link
JP (1) JPS56168233A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02196312A (en) * 1989-01-26 1990-08-02 Sanyo Electric Co Ltd Temperature controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02196312A (en) * 1989-01-26 1990-08-02 Sanyo Electric Co Ltd Temperature controller

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