JPS6489301A - Heat sensitive magnet - Google Patents

Heat sensitive magnet

Info

Publication number
JPS6489301A
JPS6489301A JP24516087A JP24516087A JPS6489301A JP S6489301 A JPS6489301 A JP S6489301A JP 24516087 A JP24516087 A JP 24516087A JP 24516087 A JP24516087 A JP 24516087A JP S6489301 A JPS6489301 A JP S6489301A
Authority
JP
Japan
Prior art keywords
magnet
temperature
superconductor
switch
critical temperature
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
JP24516087A
Other languages
Japanese (ja)
Other versions
JPH0738341B2 (en
Inventor
Hiroshi Taniguchi
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 JP24516087A priority Critical patent/JPH0738341B2/en
Publication of JPS6489301A publication Critical patent/JPS6489301A/en
Publication of JPH0738341B2 publication Critical patent/JPH0738341B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/005—Mechanisms for operating contacts making use of superconductivity, e.g. levitation switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/58—Thermally-sensitive members actuated due to thermally controlled change of magnetic permeability

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

PURPOSE:To accurately detect a specific temperature by not discharging a magnetic field at a superconducting critical temperature or lower out of a coating of a superconducting material around a magnet, and discharging it at the critical temperature or higher out of this coating. CONSTITUTION:A switch SW1 in which a heat sensitive magnet having a magnet 1 covered with a superconductor 2 is disposed is composed. The superconductor 2 does not exhibits the property of a magnet at its critical temperature or lower, and holds an input terminal 3 and an output terminal 4 in a conductive state. When the temperature of the superconductor 2 becomes the critical temperature or higher, the superconductor 2 becomes a normal conductive, a sensing magnet becomes normal conductive, and operates as a magnet. Accordingly, the contact piece of the switch SW1 is driven to turn OFF between the terminals 2 and 3. Thus, the switch can be switched without necessity of special energy by the variation in the environmental temperature. In this manner, specific temperature (according to the material or manufacturing method of the superconducting material) can be accurately and stably detected.
JP24516087A 1987-09-29 1987-09-29 Heat-sensitive magnet and switch device using the same Expired - Lifetime JPH0738341B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24516087A JPH0738341B2 (en) 1987-09-29 1987-09-29 Heat-sensitive magnet and switch device using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24516087A JPH0738341B2 (en) 1987-09-29 1987-09-29 Heat-sensitive magnet and switch device using the same

Publications (2)

Publication Number Publication Date
JPS6489301A true JPS6489301A (en) 1989-04-03
JPH0738341B2 JPH0738341B2 (en) 1995-04-26

Family

ID=17129505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24516087A Expired - Lifetime JPH0738341B2 (en) 1987-09-29 1987-09-29 Heat-sensitive magnet and switch device using the same

Country Status (1)

Country Link
JP (1) JPH0738341B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01164640U (en) * 1988-05-09 1989-11-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01164640U (en) * 1988-05-09 1989-11-16

Also Published As

Publication number Publication date
JPH0738341B2 (en) 1995-04-26

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