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IE40005B1 - Improvements in varistors - Google Patents

Improvements in varistors

Info

Publication number
IE40005B1
IE40005B1 IE1766/74A IE176674A IE40005B1 IE 40005 B1 IE40005 B1 IE 40005B1 IE 1766/74 A IE1766/74 A IE 1766/74A IE 176674 A IE176674 A IE 176674A IE 40005 B1 IE40005 B1 IE 40005B1
Authority
IE
Ireland
Prior art keywords
contacts
metal oxide
body portion
coating
enhances
Prior art date
Application number
IE1766/74A
Other versions
IE40005L (en
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IE40005L publication Critical patent/IE40005L/en
Publication of IE40005B1 publication Critical patent/IE40005B1/en

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
    • H01C7/102—Varistor boundary, e.g. surface layers

Landscapes

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

Abstract

Disclosed is a metal oxide varistor comprising a body portion consisting essentially of a metal oxide and a small percentage of a plurality of preselected additives. The body portion defines two major surface areas and metallic contacts are applied to the two surface areas. Beneath the contacts there is a coating that enhances the adhesion of the contacts. In a preferred embodiment disclosed herein the coating contours the surface of the body and thereby enhances contact adhesion. [US3903494A]
IE1766/74A 1973-09-27 1974-08-26 Improvements in varistors IE40005B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US401307A US3903494A (en) 1973-09-27 1973-09-27 Metal oxide varistor with coating that enhances contact adhesion

Publications (2)

Publication Number Publication Date
IE40005L IE40005L (en) 1975-03-27
IE40005B1 true IE40005B1 (en) 1979-02-14

Family

ID=23587195

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1766/74A IE40005B1 (en) 1973-09-27 1974-08-26 Improvements in varistors

Country Status (9)

Country Link
US (1) US3903494A (en)
JP (1) JPS5623283B2 (en)
CA (1) CA1020288A (en)
DE (1) DE2445626C2 (en)
FR (1) FR2246032B1 (en)
GB (1) GB1483812A (en)
IE (1) IE40005B1 (en)
IT (1) IT1022210B (en)
SE (1) SE395560B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4198443A (en) * 1978-05-26 1980-04-15 General Electric Company Sinterless zinc oxide varistor devices
US4371860A (en) * 1979-06-18 1983-02-01 General Electric Company Solderable varistor
US4460623A (en) * 1981-11-02 1984-07-17 General Electric Company Method of varistor capacitance reduction by boron diffusion
US4538347A (en) * 1984-06-18 1985-09-03 Gte Laboratories Incorporated Method for making a varistor package
US6279811B1 (en) 2000-05-12 2001-08-28 Mcgraw-Edison Company Solder application technique
US6735068B1 (en) 2001-03-29 2004-05-11 Mcgraw-Edison Company Electrical apparatus employing one or more housing segments
RU2412496C2 (en) * 2005-08-05 2011-02-20 Кива Спол. С Р.О. Overvoltage protection device with state alarm
US20080012127A1 (en) * 2006-06-28 2008-01-17 Inpaq Technology Co., Ltd. Insulation structure for multilayer passive elements and fabrication method thereof
US7741946B2 (en) * 2007-07-25 2010-06-22 Thinking Electronics Industrial Co., Ltd. Metal oxide varistor with heat protection
JP5248374B2 (en) * 2009-03-13 2013-07-31 新光電気工業株式会社 3-pole surge arrester
US20100328016A1 (en) * 2009-06-24 2010-12-30 Robert Wang Safe surge absorber module
US8836464B2 (en) * 2009-06-24 2014-09-16 Ceramate Technical Co., Ltd. Explosion-proof and flameproof ejection type safety surge-absorbing module
US9165702B2 (en) * 2011-03-07 2015-10-20 James P. Hagerty Thermally-protected varistor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE635491C (en) * 1933-07-25 1936-09-18 Aeg Resistor for surge arresters composed of conductive materials and binding agents
NL39212C (en) * 1933-07-26
DE688073C (en) * 1934-10-27 1940-02-12 Ellinger & Geissler Fabrik Ele Process for the production of metallic end or intermediate contacts on carbon-containing semiconductor layers for fixed and variable resistances
US2501322A (en) * 1946-11-07 1950-03-21 Westinghouse Electric Corp Moisture-resistant lightning arrester valve block
US3069294A (en) * 1954-06-03 1962-12-18 Corning Glass Works Electrical metal oxide resistor having a glass enamel coating
DE1046154B (en) * 1956-03-29 1958-12-11 Siemens Ag Electrical sheet resistance with metal layer used for contacting
JPS521113B1 (en) * 1966-05-16 1977-01-12
CA831691A (en) * 1967-10-09 1970-01-06 Matsuoka Michio Non-linear resistors of bulk type
US3512057A (en) * 1968-03-21 1970-05-12 Teledyne Systems Corp Semiconductor device with barrier impervious to fast ions and method of making

Also Published As

Publication number Publication date
FR2246032A1 (en) 1975-04-25
IT1022210B (en) 1978-03-20
CA1020288A (en) 1977-11-01
SE7412080L (en) 1975-04-01
JPS5076590A (en) 1975-06-23
SE395560B (en) 1977-08-15
DE2445626C2 (en) 1986-09-18
JPS5623283B2 (en) 1981-05-30
GB1483812A (en) 1977-08-24
US3903494A (en) 1975-09-02
FR2246032B1 (en) 1983-04-15
DE2445626A1 (en) 1975-04-03
IE40005L (en) 1975-03-27

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