GB1488157A - Varistors - Google Patents
VaristorsInfo
- 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
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.
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3619620A1 (en) * | 1986-06-11 | 1987-12-17 | Siemens Ag | METHOD FOR PRODUCING CERAMIC ZINCOXIDE VARISTOR MATERIAL AND USE OF THE MATERIAL PRODUCED BY THIS METHOD |
Families Citing this family (19)
| 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 nonlinear 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA831691A (en) * | 1967-10-09 | 1970-01-06 | Matsuoka Michio | Non-linear resistors of bulk type |
-
1973
- 1973-11-19 US US417274A patent/US3928242A/en not_active Expired - Lifetime
-
1974
- 1974-11-12 CA CA213,468A patent/CA1019464A/en not_active Expired
- 1974-11-14 NL NL7414865A patent/NL7414865A/en not_active Application Discontinuation
- 1974-11-15 DE DE19742454260 patent/DE2454260A1/en active Pending
- 1974-11-18 JP JP49132118A patent/JPS5080496A/ja active Pending
- 1974-11-19 FR FR7438057A patent/FR2251894A1/fr not_active Withdrawn
- 1974-11-19 GB GB50085/74A patent/GB1488157A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3619620A1 (en) * | 1986-06-11 | 1987-12-17 | Siemens Ag | METHOD FOR PRODUCING CERAMIC ZINCOXIDE VARISTOR MATERIAL AND USE OF THE MATERIAL PRODUCED BY THIS METHOD |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5080496A (en) | 1975-06-30 |
| CA1019464A (en) | 1977-10-18 |
| US3928242A (en) | 1975-12-23 |
| NL7414865A (en) | 1975-05-21 |
| DE2454260A1 (en) | 1975-06-19 |
| 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 |