GB1457749A - Varistor - Google Patents

Varistor

Info

Publication number
GB1457749A
GB1457749A GB5980773A GB5980773A GB1457749A GB 1457749 A GB1457749 A GB 1457749A GB 5980773 A GB5980773 A GB 5980773A GB 5980773 A GB5980773 A GB 5980773A GB 1457749 A GB1457749 A GB 1457749A
Authority
GB
United Kingdom
Prior art keywords
oxide
varistor
electrodes
bismuth
photoconductive
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.)
Expired
Application number
GB5980773A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1457749A publication Critical patent/GB1457749A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Adjustable Resistors (AREA)

Abstract

1457749 Photoconductive varistor GENERAL ELECTRIC CO 27 Dec 1973 [29 Dec 1972] 59807/73 Heading H1K In a photoconductive varistor comprising a polycrystalline sintered body 10 of zinc oxide and a minor constituent consisting of at least one other metal oxide and/or halide, a pair of electrodes 11, 12 disposed on a surface of the body are separated by a gap 15 which, in use, is illuminated to control the current flowing between the electrodes. In an example, a varistor disc comprises zinc oxide, with bismuth oxide and antimony oxide as secondary constituents, and small amounts of other metal oxides. Other constituents mentioned are beryllium oxide, bismuth oxide, bismuth fluoride and cobalt fluoride. The electrodes are of evaporated or sputtered aluminium, zinc or platinum or of silver paint. Methods of operating the varistor are described and claimed in Specification 1,457,748. Reference has been directed by the Comptroller to Specification 1,366,008.
GB5980773A 1972-12-29 1973-12-27 Varistor Expired GB1457749A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31933072A 1972-12-29 1972-12-29

Publications (1)

Publication Number Publication Date
GB1457749A true GB1457749A (en) 1976-12-08

Family

ID=23241796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5980773A Expired GB1457749A (en) 1972-12-29 1973-12-27 Varistor

Country Status (6)

Country Link
JP (1) JPS4997264A (en)
DE (1) DE2363438A1 (en)
FR (1) FR2212618A1 (en)
GB (1) GB1457749A (en)
NL (1) NL7316787A (en)
SE (1) SE388961B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389105A1 (en) * 1977-04-26 1978-11-24 Metaux Precieux Cie MANUAL DISPENSER FOR PASTA PRODUCTS
DE3036617C2 (en) * 1980-09-29 1982-06-24 Siemens AG, 1000 Berlin und 8000 München Process for manufacturing the ceramic material for zinc oxide varistors

Also Published As

Publication number Publication date
DE2363438A1 (en) 1974-07-04
SE388961B (en) 1976-10-18
FR2212618A1 (en) 1974-07-26
JPS4997264A (en) 1974-09-13
NL7316787A (en) 1974-07-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee