BR7902992A - Processo de aperfeicoamento das caracteristicas de elevacao de tensao de varistores - Google Patents

Processo de aperfeicoamento das caracteristicas de elevacao de tensao de varistores

Info

Publication number
BR7902992A
BR7902992A BR7902992A BR7902992A BR7902992A BR 7902992 A BR7902992 A BR 7902992A BR 7902992 A BR7902992 A BR 7902992A BR 7902992 A BR7902992 A BR 7902992A BR 7902992 A BR7902992 A BR 7902992A
Authority
BR
Brazil
Prior art keywords
varistors
lifting
improving
voltage
varistors voltage
Prior art date
Application number
BR7902992A
Other languages
English (en)
Inventor
H Philipp
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 BR7902992A publication Critical patent/BR7902992A/pt

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
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/30—Apparatus or processes specially adapted for manufacturing resistors adapted for baking
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermistors And Varistors (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Compositions Of Oxide Ceramics (AREA)
BR7902992A 1978-05-15 1979-05-11 Processo de aperfeicoamento das caracteristicas de elevacao de tensao de varistores BR7902992A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/905,589 US4219518A (en) 1978-05-15 1978-05-15 Method of improving varistor upturn characteristics

Publications (1)

Publication Number Publication Date
BR7902992A true BR7902992A (pt) 1979-11-27

Family

ID=25421092

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7902992A BR7902992A (pt) 1978-05-15 1979-05-11 Processo de aperfeicoamento das caracteristicas de elevacao de tensao de varistores

Country Status (7)

Country Link
US (1) US4219518A (pt)
JP (1) JPS551191A (pt)
BR (1) BR7902992A (pt)
DE (1) DE2918991A1 (pt)
FR (1) FR2426320A1 (pt)
MX (1) MX146605A (pt)
SE (1) SE7904198L (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510112A (en) * 1983-01-21 1985-04-09 The United States Of America As Represented By The United States Department Of Energy Process for fabricating ZnO-based varistors
US5264169A (en) * 1989-12-15 1993-11-23 Electric Power Research Institute, Inc. Surge stability improvement of zinc oxide varistor discs
US5269972A (en) * 1990-08-29 1993-12-14 Cooper Industries, Inc. Doped zinc oxide microspheres
US5062993A (en) * 1990-08-29 1991-11-05 Cooper Power Systems, Inc. Process for fabricating doped zinc oxide microsphere gel
US20090218735A1 (en) * 2005-08-16 2009-09-03 Otkrytoe Aktsyonernoe Obshchestvo "Polema" Method of synthesis of ceramics
CN103746399B (zh) * 2013-12-20 2017-02-01 南方电网科学研究院有限责任公司 提高电压源换流器直流输电故障穿越能力的主回路及方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953371A (en) * 1973-11-12 1976-04-27 General Electric Company Controlled grain size metal oxide varistor and process for making
JPS5320318B2 (pt) * 1973-12-20 1978-06-26
FR2286805A1 (fr) * 1974-10-01 1976-04-30 Thomson Csf Procede de fabrication de pieces en ceramique a resistance variable en fonction de la tension et composants realises avec lesdites pieces
US4003855A (en) * 1975-06-23 1977-01-18 General Electric Company Nonlinear resistor material and method of manufacture
US4094061A (en) * 1975-11-12 1978-06-13 Westinghouse Electric Corp. Method of producing homogeneous sintered ZnO non-linear resistors

Also Published As

Publication number Publication date
JPS551191A (en) 1980-01-07
DE2918991A1 (de) 1979-11-22
SE7904198L (sv) 1979-11-16
US4219518A (en) 1980-08-26
FR2426320A1 (fr) 1979-12-14
MX146605A (es) 1982-07-14

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