JPS5597613A - Temperature control circuit - Google Patents

Temperature control circuit

Info

Publication number
JPS5597613A
JPS5597613A JP295779A JP295779A JPS5597613A JP S5597613 A JPS5597613 A JP S5597613A JP 295779 A JP295779 A JP 295779A JP 295779 A JP295779 A JP 295779A JP S5597613 A JPS5597613 A JP S5597613A
Authority
JP
Japan
Prior art keywords
voltage
temperature
control
constitution
transistor
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
JP295779A
Other languages
Japanese (ja)
Inventor
Minoru Aoki
Isao Kawachi
Hikari Ohashi
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.)
Renesas Eastern Japan Semiconductor Inc
Hitachi Iruma Electronic Co Ltd
Original Assignee
Hitachi Tohbu Semiconductor Ltd
Hitachi Iruma Electronic 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 Hitachi Tohbu Semiconductor Ltd, Hitachi Iruma Electronic Co Ltd filed Critical Hitachi Tohbu Semiconductor Ltd
Priority to JP295779A priority Critical patent/JPS5597613A/en
Publication of JPS5597613A publication Critical patent/JPS5597613A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To give the control to the action of the heat source via the voltage comparator circuit which features the hysteresis properties based on the voltage corresponding to the temperature to be controlled along with the temperature signal converted into the voltage signal.
CONSTITUTION: The detection temperature information is converted into voltage VS through thermistor RS and resistance RO, and detection voltage VS is applied to the Schmitt trigger circuit consisting of transistors Q1 and Q2. For this circiut, transistor Q1 is turned on by input voltage V1 corresponding to the temperature to be controlled and then turned off by voltage V2. Output voltage VO of the Schmitt trigger circuit is applied to transistor Q3 via voltage shift diodes D1WD3 to give the control to load driving relay RL. In such constitution, no burning is caused to the motor although the compressor or the like is used to the heat source, thus realizing the high-accuracy temperature control.
COPYRIGHT: (C)1980,JPO&Japio
JP295779A 1979-01-17 1979-01-17 Temperature control circuit Pending JPS5597613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP295779A JPS5597613A (en) 1979-01-17 1979-01-17 Temperature control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP295779A JPS5597613A (en) 1979-01-17 1979-01-17 Temperature control circuit

Publications (1)

Publication Number Publication Date
JPS5597613A true JPS5597613A (en) 1980-07-25

Family

ID=11543837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP295779A Pending JPS5597613A (en) 1979-01-17 1979-01-17 Temperature control circuit

Country Status (1)

Country Link
JP (1) JPS5597613A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61268884A (en) * 1985-05-23 1986-11-28 Mitsubishi Electric Corp Pressure adjustor for hydraulic pressure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61268884A (en) * 1985-05-23 1986-11-28 Mitsubishi Electric Corp Pressure adjustor for hydraulic pressure

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