GB1290945A - - Google Patents

Info

Publication number
GB1290945A
GB1290945A GB1290945DA GB1290945A GB 1290945 A GB1290945 A GB 1290945A GB 1290945D A GB1290945D A GB 1290945DA GB 1290945 A GB1290945 A GB 1290945A
Authority
GB
United Kingdom
Prior art keywords
air
sintering
feb
components
followed
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
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 JP44014792A external-priority patent/JPS492716B1/ja
Priority claimed from JP44018238A external-priority patent/JPS492717B1/ja
Priority claimed from JP44065501A external-priority patent/JPS4840795B1/ja
Priority claimed from JP44065498A external-priority patent/JPS4840792B1/ja
Priority claimed from JP44065502A external-priority patent/JPS4840796B1/ja
Priority claimed from JP44065500A external-priority patent/JPS4840794B1/ja
Application filed filed Critical
Publication of GB1290945A publication Critical patent/GB1290945A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C7/00Non-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
    • H01C7/10Non-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
    • H01C7/105Varistor cores
    • H01C7/108Metal oxide
    • H01C7/112ZnO type

Landscapes

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

Abstract

1290945 Ceramics MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 24 Feb 1970 [24 Feb 1969 7 March 1969 15 Aug 1969 (4)] 8899/70 Heading C1J [Also in Division H1] A varistor has a sintered body containing 0À05-10 mol per cent of La 2 O 3 and/or Y 2 O 3 , optionally 0À05-8 mol per cent CoO and/or MnO, the remainder being ZnO, one or both of the electrodes being formed by the application of a silver paint which is fired-on at 300-900‹ C. in air or oxygen. The body may be produced by sintering the components at 1100-1450‹ C. for 1-3 hours in air followed by furnace-cooling to room temperature (or followed by air quenching if a lower resistivity is desired). Sintering in nitrogen or argon gives a product of lower resistivity. A preliminary calcining of the components at 700-1000‹ C. may be employed before the mixture is crushed, pressed and sintered.
GB1290945D 1969-02-24 1970-02-24 Expired GB1290945A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP44014792A JPS492716B1 (en) 1969-02-24 1969-02-24
JP44018238A JPS492717B1 (en) 1969-03-07 1969-03-07
JP44065501A JPS4840795B1 (en) 1969-08-15 1969-08-15
JP44065498A JPS4840792B1 (en) 1969-08-15 1969-08-15
JP44065502A JPS4840796B1 (en) 1969-08-15 1969-08-15
JP44065500A JPS4840794B1 (en) 1969-08-15 1969-08-15

Publications (1)

Publication Number Publication Date
GB1290945A true GB1290945A (en) 1972-09-27

Family

ID=27548535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1290945D Expired GB1290945A (en) 1969-02-24 1970-02-24

Country Status (4)

Country Link
US (1) US3670216A (en)
FR (1) FR2032355B1 (en)
GB (1) GB1290945A (en)
NL (1) NL152395B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5260985A (en) * 1975-11-14 1977-05-19 Otowa Electric Voltageenonnlinearrresistive element
JPS5385400A (en) * 1977-01-06 1978-07-27 Tdk Corp Porcelain composite for voltage non-linear resistor
JPS5812306A (en) * 1981-07-16 1983-01-24 株式会社東芝 Oxide voltage nonlinear resistor
US4436650A (en) 1982-07-14 1984-03-13 Gte Laboratories Incorporated Low voltage ceramic varistor
GB2182032A (en) * 1985-10-24 1987-05-07 Stc Plc Dielectric compositions
US5644284A (en) * 1994-04-27 1997-07-01 Matsushita Electric Industrial Co., Ltd. Temperature sensor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299332A (en) * 1961-07-10 1967-01-17 Murata Manufacturing Co Semiconductive capacitor and the method of manufacturing the same
DE1303160C2 (en) * 1963-12-13 1974-06-12 Philips Nv METHOD OF MANUFACTURING AN ELECTRIC BARRIER BALL CONDENSER BY FOREIGNIONS
JPS5437289B1 (en) * 1965-09-17 1979-11-14
US3505574A (en) * 1966-07-08 1970-04-07 Globe Union Inc Ceramic composition for barrier layer capacitors
US3529218A (en) * 1967-07-28 1970-09-15 Matsushita Electric Ind Co Ltd Ceramic rectifier and a method for preparing the same
US3503029A (en) * 1968-04-19 1970-03-24 Matsushita Electric Ind Co Ltd Non-linear resistor

Also Published As

Publication number Publication date
US3670216A (en) 1972-06-13
DE2009319A1 (en) 1970-11-19
FR2032355B1 (en) 1977-01-21
NL7002605A (en) 1970-08-26
DE2009319B2 (en) 1973-01-04
NL152395B (en) 1977-02-15
FR2032355A1 (en) 1970-11-27

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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