JPS55118524A - Temperature control device for heater device - Google Patents

Temperature control device for heater device

Info

Publication number
JPS55118524A
JPS55118524A JP2554079A JP2554079A JPS55118524A JP S55118524 A JPS55118524 A JP S55118524A JP 2554079 A JP2554079 A JP 2554079A JP 2554079 A JP2554079 A JP 2554079A JP S55118524 A JPS55118524 A JP S55118524A
Authority
JP
Japan
Prior art keywords
comparator
level
output
heater
connection
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
JP2554079A
Other languages
Japanese (ja)
Other versions
JPS5828498B2 (en
Inventor
Kenji Todo
Motoshi Miyanaka
Takeshi Matsuzaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP2554079A priority Critical patent/JPS5828498B2/en
Publication of JPS55118524A publication Critical patent/JPS55118524A/en
Publication of JPS5828498B2 publication Critical patent/JPS5828498B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Regulation And Control Of Combustion (AREA)
  • Control Of Combustion (AREA)

Abstract

PURPOSE: To facilitate a checking of the non-connection of the negative thermistor by a method wherein a heater device is energized to heat the evaporator unit and the resistance value is measured after a specified time length elapses, i.e. the temperature is increased up to such a value as facilitating an easy measuring of the resistance value to be performed.
CONSTITUTION: In case of normal operation, when the evaporator is heated up to a specified value, the output of the comparator 44 in the non-connection checking circuit is made to be "L" level. After a specified time is passed from the throwing in of the operation switch 2 i.e. the comparator 64 is reversed, the output from the comparator 50 is reversed to "H" level. Due to this fact, the transistor 61 keeps OFF condition and the energization of the electric heater is continued. In case that the negative thermistor 11 shows a non-connection condition, the output from the comparator 44 is made to be "H" level. And after a specified period of time elapses, the output from the comparator 50 is also made to be "H" level, so that the transistor 61 is changed to ON, wherein the current to the heater is interrupted.
COPYRIGHT: (C)1980,JPO&Japio
JP2554079A 1979-03-07 1979-03-07 Temperature control device for heating equipment Expired JPS5828498B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2554079A JPS5828498B2 (en) 1979-03-07 1979-03-07 Temperature control device for heating equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2554079A JPS5828498B2 (en) 1979-03-07 1979-03-07 Temperature control device for heating equipment

Publications (2)

Publication Number Publication Date
JPS55118524A true JPS55118524A (en) 1980-09-11
JPS5828498B2 JPS5828498B2 (en) 1983-06-16

Family

ID=12168823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2554079A Expired JPS5828498B2 (en) 1979-03-07 1979-03-07 Temperature control device for heating equipment

Country Status (1)

Country Link
JP (1) JPS5828498B2 (en)

Also Published As

Publication number Publication date
JPS5828498B2 (en) 1983-06-16

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