GB1488157A - Varistors - Google Patents

Varistors

Info

Publication number
GB1488157A
GB1488157A GB50085/74A GB5008574A GB1488157A GB 1488157 A GB1488157 A GB 1488157A GB 50085/74 A GB50085/74 A GB 50085/74A GB 5008574 A GB5008574 A GB 5008574A GB 1488157 A GB1488157 A GB 1488157A
Authority
GB
United Kingdom
Prior art keywords
medium
metallic bodies
nov
particles
metal oxide
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
GB50085/74A
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 GB1488157A publication Critical patent/GB1488157A/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

Landscapes

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

Abstract

1488157 Varistors GENERAL ELECTRIC CO 19 Nov 1974 [19 Nov 1973] 50085/74 Heading ClJ [Also in Division HI] The sintered body 11A of a varistor 10A comprises a metal oxide mixed with at least one additive to form a medium 18A or 18B in which discrete metallic bodies 17A or 17B are distributed. The metallic bodies may be particles 17A as shown in Fig. 3, or they may comprise planar layers 17B, Fig. 4, laminated with the metal oxide medium 18B. The particles 17A may be sifted through meshes to obtain uniformity of size. The medium 18A or 18B if of ZnO with additives chosen from the oxides of Bi, Mn, Co, Sb, Ba, Ti, Li, Cr, Ge, Sn, Ni or Si. The metallic bodies may be of Bi, Sb, Ba, B, Ge, Si, Be, Sn, Cu, Gd, In, Se, Sr, Ta, Th, W, or the precious and transition metals. Sintering is at 800-1350‹ C.
GB50085/74A 1973-11-19 1974-11-19 Varistors Expired GB1488157A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US417274A US3928242A (en) 1973-11-19 1973-11-19 Metal oxide varistor with discrete bodies of metallic material therein and method for the manufacture thereof

Publications (1)

Publication Number Publication Date
GB1488157A true GB1488157A (en) 1977-10-05

Family

ID=23653282

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50085/74A Expired GB1488157A (en) 1973-11-19 1974-11-19 Varistors

Country Status (7)

Country Link
US (1) US3928242A (en)
JP (1) JPS5080496A (en)
CA (1) CA1019464A (en)
DE (1) DE2454260A1 (en)
FR (1) FR2251894A1 (en)
GB (1) GB1488157A (en)
NL (1) NL7414865A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619620A1 (en) * 1986-06-11 1987-12-17 Siemens Ag Process for preparing ceramic zinc oxide varistor material and use of the material prepared according to this process

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033906A (en) * 1974-06-03 1977-07-05 Fuji Electric Company Ltd. Ceramics having nonlinear voltage characteristics and method for producing same
US4038217A (en) * 1974-07-25 1977-07-26 Fuji Electric Company Ltd. Ceramics having non-linear voltage characteristics and method of producing the same
US4122232A (en) * 1975-04-21 1978-10-24 Engelhard Minerals & Chemicals Corporation Air firable base metal conductors
US4069061A (en) * 1975-06-30 1978-01-17 Fuji Electric Co., Ltd. Ceramics having nonlinear voltage characteristics
US4041436A (en) * 1975-10-24 1977-08-09 Allen-Bradley Company Cermet varistors
US4072771A (en) * 1975-11-28 1978-02-07 Bala Electronics Corporation Copper thick film conductor
US4172922A (en) * 1977-08-18 1979-10-30 Trw, Inc. Resistor material, resistor made therefrom and method of making the same
US4265844A (en) * 1979-05-16 1981-05-05 Marcon Electronics Co. Ltd. Method of manufacturing a voltage-nonlinear resistor
US4383237A (en) * 1980-05-07 1983-05-10 Matsushita Electric Industrial Co., Ltd. Voltage-dependent resistor
US4374049A (en) * 1980-06-06 1983-02-15 General Electric Company Zinc oxide varistor composition not containing silica
US4317749A (en) * 1980-08-22 1982-03-02 Ferro Corporation Thick film conductor employing cobalt oxide
US4521800A (en) * 1982-10-15 1985-06-04 Standard Oil Company (Indiana) Multilayer photoelectrodes utilizing exotic materials
JPS61216305A (en) * 1985-03-20 1986-09-26 富士電機株式会社 Voltage non-linear resistor
JPH0773082B2 (en) * 1986-12-04 1995-08-02 松下電器産業株式会社 Method for producing zinc oxide varistor
DE3823698A1 (en) * 1988-07-13 1990-01-18 Philips Patentverwaltung NON-LINEAR VOLTAGE RESISTANCE
JPH0685363B2 (en) * 1991-09-30 1994-10-26 ソマール株式会社 High voltage varistor and manufacturing method thereof
US5345212A (en) * 1993-07-07 1994-09-06 National Starch And Chemical Investment Holding Corporation Power surge resistor with palladium and silver composition
DE102008024479A1 (en) * 2008-05-21 2009-12-03 Epcos Ag Electrical component arrangement
DE102008024480A1 (en) 2008-05-21 2009-12-03 Epcos Ag Electrical component arrangement

Family Cites Families (1)

* 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619620A1 (en) * 1986-06-11 1987-12-17 Siemens Ag Process for preparing ceramic zinc oxide varistor material and use of the material prepared according to this process

Also Published As

Publication number Publication date
DE2454260A1 (en) 1975-06-19
CA1019464A (en) 1977-10-18
JPS5080496A (en) 1975-06-30
NL7414865A (en) 1975-05-21
US3928242A (en) 1975-12-23
FR2251894A1 (en) 1975-06-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee