JPS56168234A - Temperature controlling device - Google Patents

Temperature controlling device

Info

Publication number
JPS56168234A
JPS56168234A JP7306680A JP7306680A JPS56168234A JP S56168234 A JPS56168234 A JP S56168234A JP 7306680 A JP7306680 A JP 7306680A JP 7306680 A JP7306680 A JP 7306680A JP S56168234 A JPS56168234 A JP S56168234A
Authority
JP
Japan
Prior art keywords
temperature
circuit
voltage
voltage vac
sensor
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.)
Granted
Application number
JP7306680A
Other languages
Japanese (ja)
Other versions
JPS6138488B2 (en
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 JP7306680A priority Critical patent/JPS56168234A/en
Publication of JPS56168234A publication Critical patent/JPS56168234A/en
Publication of JPS6138488B2 publication Critical patent/JPS6138488B2/ja
Granted 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 prevent a thermosensitive characteristics of a sensor from deteriorating due to secular change by preventing a DC bias from being applied to the sensor with use of a converting circuit and a by-pass circuit in terms of a temperature controlling device such as an electric blanket. CONSTITUTION:DC voltage VCC for a temperature controlling circuit is obtained from AC voltage VAC through a diode 15, a resistance 16 and a capacitor 17 for a voltage drops. During a period when an A side of AC voltage VAC is a negative half cycle compared with an E side, a temperature is detected by a converting circuit 18, and in case when the detected temperature is lower than a set temperature, at the moment when the AC voltage VAC transfered to the positive half cycle, a trigger pulse is generated from an AC voltage synchronized comparison amplifying circuit 19 to trigger a power controlling element 9 to cause a half wave conduction through a heater 2 to raise the heater temperature to the set temperature. 20 is a by- pass circuit that permits the converting circuit 18 to by-pass to apply the AC voltage VAC to a sensor 3, during AC voltage VAC is a positive half cycle.
JP7306680A 1980-05-30 1980-05-30 Temperature controlling device Granted JPS56168234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7306680A JPS56168234A (en) 1980-05-30 1980-05-30 Temperature controlling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7306680A JPS56168234A (en) 1980-05-30 1980-05-30 Temperature controlling device

Publications (2)

Publication Number Publication Date
JPS56168234A true JPS56168234A (en) 1981-12-24
JPS6138488B2 JPS6138488B2 (en) 1986-08-29

Family

ID=13507587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7306680A Granted JPS56168234A (en) 1980-05-30 1980-05-30 Temperature controlling device

Country Status (1)

Country Link
JP (1) JPS56168234A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03101447U (en) * 1990-01-31 1991-10-23

Also Published As

Publication number Publication date
JPS6138488B2 (en) 1986-08-29

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