JPS57109011A - Temperature controller - Google Patents

Temperature controller

Info

Publication number
JPS57109011A
JPS57109011A JP55186370A JP18637080A JPS57109011A JP S57109011 A JPS57109011 A JP S57109011A JP 55186370 A JP55186370 A JP 55186370A JP 18637080 A JP18637080 A JP 18637080A JP S57109011 A JPS57109011 A JP S57109011A
Authority
JP
Japan
Prior art keywords
current
sensor
potential
diode
flowing
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
JP55186370A
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 JP55186370A priority Critical patent/JPS57109011A/en
Publication of JPS57109011A publication Critical patent/JPS57109011A/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
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
    • G05D23/1909—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can only take two discrete values

Landscapes

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

Abstract

PURPOSE:To exercise high-precision temperature control by detecting a current, flowing through a sensor, by a transistor (TR) and connecting a diode in parallel to the TR. CONSTITUTION:When the side (a) of an AC power source VAC has a negative potential, a current IT flowing through a sensor 3 is the collector current IC of a TR32 and integrated by a circuit of a capacitor 33 and a resistance 34 to be converted into a temperature signal potential VT. The current IT varies with the detected temperature of the sensor 3, so temperature control has high precision. If the power of the power source VAC rises, a potential VCC rises and the current of a current mirror circuit 30 also increases, so a set potential VS decreases to compensate decrease in potential VT. When the side (a) is positive, on the other hand, the current of the sensor 3 flows through the diode 35, so an exactly symmetic AC voltage is applied to the sensor 3, so that the deterioration of the sensor 3 due to polarization is prevented.
JP55186370A 1980-12-26 1980-12-26 Temperature controller Pending JPS57109011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55186370A JPS57109011A (en) 1980-12-26 1980-12-26 Temperature controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55186370A JPS57109011A (en) 1980-12-26 1980-12-26 Temperature controller

Publications (1)

Publication Number Publication Date
JPS57109011A true JPS57109011A (en) 1982-07-07

Family

ID=16187187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55186370A Pending JPS57109011A (en) 1980-12-26 1980-12-26 Temperature controller

Country Status (1)

Country Link
JP (1) JPS57109011A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61211124A (en) * 1985-03-14 1986-09-19 Kinugawa Rubber Ind Co Ltd Securing structure of weather strip for window panel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61211124A (en) * 1985-03-14 1986-09-19 Kinugawa Rubber Ind Co Ltd Securing structure of weather strip for window panel

Similar Documents

Publication Publication Date Title
JPS57109011A (en) Temperature controller
JPS57109012A (en) Temperature controller
JPS6447077A (en) Protective circuit for power mos field-effect transistor
JPS57208428A (en) Temperature detecting device
JPS55163681A (en) Magnetic bubble memory device
JPS57111425A (en) Detector of ic chip temperature
JPS54148492A (en) Integrated circuit
JPS5687816A (en) Pressure or displacement sensor
SU577627A1 (en) Transistor inverter
JPS57132214A (en) Constant voltage circuit
JPS56153224A (en) Electronic clinical thermometer
JPS6483155A (en) Detecting circuit of fluctuation of external power supply voltage for semiconductor device
JPS5735480A (en) Automatic focussing device
KR900006580Y1 (en) Moisture sensor instrument
JPS56132813A (en) Reset device of integrated circuit
JPS57106871A (en) Current detecting circuit
JPS6326885B2 (en)
JPH0524182Y2 (en)
JPS5522175A (en) Sensor circuit
JPS5728265A (en) Current detecting circuit employing silicon bidirectional switching element
JPS57165748A (en) Detection circuit of quantity of toner
JPS5522169A (en) Sensor circuit
JPS5756983A (en) Semiconductor laser driving device
JPS56155969A (en) Flash fixing device
JPS57208713A (en) Bias controlling circuit