GB1381093A - Materials suitable for use as electrical resistance materials - Google Patents

Materials suitable for use as electrical resistance materials

Info

Publication number
GB1381093A
GB1381093A GB1005373A GB1005373A GB1381093A GB 1381093 A GB1381093 A GB 1381093A GB 1005373 A GB1005373 A GB 1005373A GB 1005373 A GB1005373 A GB 1005373A GB 1381093 A GB1381093 A GB 1381093A
Authority
GB
United Kingdom
Prior art keywords
mol
per cent
materials
electrical resistance
mno
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
GB1005373A
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
Priority claimed from JP47021817A external-priority patent/JPS5140951B2/ja
Priority claimed from JP47021819A external-priority patent/JPS5140953B2/ja
Priority claimed from JP47021818A external-priority patent/JPS5140952B2/ja
Priority claimed from JP47021816A external-priority patent/JPS5140950B2/ja
Priority claimed from JP47021814A external-priority patent/JPS5140948B2/ja
Priority claimed from JP47021815A external-priority patent/JPS5140949B2/ja
Priority claimed from JP47021820A external-priority patent/JPS5140954B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1381093A publication Critical patent/GB1381093A/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
    • H01C7/105—Varistor cores
    • H01C7/108—Metal oxide
    • H01C7/112—ZnO type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/16—Series resistor structurally associated with spark gap

Landscapes

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

Abstract

1381093 Doped zinc oxide MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 1 March 1973 [1 March 1972 (7)] 10053/73 Headings C1A and C1J [Also in Division H1] A varistor material consists of a sintered body of ZnO containing as additives 0À1-3À0 mol. per cent of Bi 2 O 3 , 0À05-3À0 mol. per cent of Sb 2 O 3 and 0À1-3À0 mol. per cent of CoF 2 . The examples given in the Specification include as further additives (i) 0À1-3À0 mol. per cent of CoO or 0À1-3À0 mol. per cent of MnO; or (ii) 0À1-3À0 mol. per cent of CoO, 0À1-3À0 mol. per cent of MnO, and one member of the group consisting of (a) 0À05-3À0 mol. per cent of Cr 2 O 3 , (b) 0À1-3À0 mol. per cent of SnO 2 , (c) 0À1-10À0 mol. per cent of SiO 2 and (d) 0À05-3À0 mol. per cent of Cr 2 O 3 and 0À1-10À0 mol. per cent of SiO 2 .
GB1005373A 1972-03-01 1973-03-01 Materials suitable for use as electrical resistance materials Expired GB1381093A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP47021817A JPS5140951B2 (en) 1972-03-01 1972-03-01
JP47021819A JPS5140953B2 (en) 1972-03-01 1972-03-01
JP47021818A JPS5140952B2 (en) 1972-03-01 1972-03-01
JP47021816A JPS5140950B2 (en) 1972-03-01 1972-03-01
JP47021814A JPS5140948B2 (en) 1972-03-01 1972-03-01
JP47021815A JPS5140949B2 (en) 1972-03-01 1972-03-01
JP47021820A JPS5140954B2 (en) 1972-03-01 1972-03-01

Publications (1)

Publication Number Publication Date
GB1381093A true GB1381093A (en) 1975-01-22

Family

ID=27563956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1005373A Expired GB1381093A (en) 1972-03-01 1973-03-01 Materials suitable for use as electrical resistance materials

Country Status (5)

Country Link
US (1) US3805114A (en)
CA (1) CA968067A (en)
GB (1) GB1381093A (en)
IT (1) IT977553B (en)
NL (1) NL169652C (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2345753C3 (en) * 1972-09-11 1978-03-09 Tokyo Shibaura Electric Co., Ltd., Kawasaki, Kanagawa (Japan) Metal oxide varistor
JPS5228239B2 (en) * 1972-11-01 1977-07-25
US3928245A (en) * 1973-07-09 1975-12-23 Gen Electric Metal oxide voltage-variable resistor composition
US3886097A (en) * 1973-11-12 1975-05-27 Gen Motors Corp Method for making a low avalanche voltage metal oxide varistor
JPS5320318B2 (en) * 1973-12-20 1978-06-26
JPS6013254B2 (en) * 1976-09-30 1985-04-05 株式会社東芝 DC or disconnector
US4234902A (en) * 1977-10-07 1980-11-18 Mitsubishi Denki Kabushiki Kaisha Enclosed lightning arrester
JPS593092B2 (en) * 1978-03-17 1984-01-23 三菱電機株式会社 Lightning-resistant overhead power transmission line equipment
US4340921A (en) * 1978-05-17 1982-07-20 General Electric Company HVDC Power transmission system with metallic return conductor
US4265844A (en) * 1979-05-16 1981-05-05 Marcon Electronics Co. Ltd. Method of manufacturing a voltage-nonlinear resistor
US4295174A (en) * 1979-05-29 1981-10-13 Westinghouse Electric Corp. Multi-series group capacitor bank protection equipment
US4326233A (en) * 1979-08-02 1982-04-20 Tokyo Shibaura Denki Kabushiki Kaisha Lightning arrester
US4298900A (en) * 1980-01-02 1981-11-03 Avdeenko Boris K Overvoltage protective device
DE3231118C1 (en) * 1982-08-20 1983-11-03 Siemens AG, 1000 Berlin und 8000 München Combined circuit arrangement with varistor and method for its production
DE3335354A1 (en) * 1983-09-29 1985-04-18 Siemens AG, 1000 Berlin und 8000 München Process for producing doped zinc oxide varistor ceramic

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA831691A (en) * 1967-10-09 1970-01-06 Matsuoka Michio Non-linear resistors of bulk type
US3515947A (en) * 1968-02-29 1970-06-02 Gen Electric Inclined arc chamber for a spark gap
JPS4840790B1 (en) * 1969-05-02 1973-12-03
US3693053A (en) * 1971-10-29 1972-09-19 Gen Electric Metal oxide varistor polyphase transient voltage suppression

Also Published As

Publication number Publication date
NL169652B (en) 1982-03-01
NL7302904A (en) 1973-09-04
NL169652C (en) 1982-08-02
US3805114A (en) 1974-04-16
CA968067A (en) 1975-05-20
IT977553B (en) 1974-09-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930228