GB545679A - Resistance composition and method of making it - Google Patents
Resistance composition and method of making itInfo
- Publication number
- GB545679A GB545679A GB349041A GB349041A GB545679A GB 545679 A GB545679 A GB 545679A GB 349041 A GB349041 A GB 349041A GB 349041 A GB349041 A GB 349041A GB 545679 A GB545679 A GB 545679A
- Authority
- GB
- United Kingdom
- Prior art keywords
- manganese
- copper
- nickel
- mixture
- making
- 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
- H01C7/04—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 having negative temperature coefficient
- H01C7/042—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 having negative temperature coefficient mainly consisting of inorganic non-metallic substances
- H01C7/043—Oxides or oxidic compounds
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Resistance Heating (AREA)
- Conductive Materials (AREA)
- Thermistors And Varistors (AREA)
Abstract
545,679. Electric resistances. STANDARD TELEPHONES & CABLES, Ltd. March 14, 1941, No. 3490. Convention date, May 23, 1940. Addition to 540,844. Drawings to Specifications. [Class 37] A resistance material having a negative temperature-resistance co-efficient comprises a heattreated mixture of oxides of manganese and copper or of manganese, nickel, and copper. In an example the copper content may be about 15 per cent and the atomic ratio of manganese to nickel between 2 and 4. The material may be made by adding a solution of a copper compound to a mixture of oxides of manganese and nickel, drying the mixture, and heating it. Heating may be effected at 800-1450‹ C.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US280692A US2274592A (en) | 1939-06-23 | 1939-06-23 | Resistance material and method of making the same |
US336734A US2282944A (en) | 1940-05-23 | 1940-05-23 | Resistance composition and method of making it |
Publications (1)
Publication Number | Publication Date |
---|---|
GB545679A true GB545679A (en) | 1942-06-08 |
Family
ID=31720241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB349041A Expired GB545679A (en) | 1939-06-23 | 1941-03-14 | Resistance composition and method of making it |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB545679A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE944818C (en) * | 1952-07-30 | 1956-06-21 | Philips Nv | Temperature-dependent dwarf resistance element |
US2863840A (en) * | 1956-01-31 | 1958-12-09 | Philips Corp | Electrical resistor |
EP0476657A1 (en) * | 1990-09-21 | 1992-03-25 | Siemens Aktiengesellschaft | Thermistor with negative temperature coefficient produced by multilayer technology |
-
1941
- 1941-03-14 GB GB349041A patent/GB545679A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE944818C (en) * | 1952-07-30 | 1956-06-21 | Philips Nv | Temperature-dependent dwarf resistance element |
US2863840A (en) * | 1956-01-31 | 1958-12-09 | Philips Corp | Electrical resistor |
EP0476657A1 (en) * | 1990-09-21 | 1992-03-25 | Siemens Aktiengesellschaft | Thermistor with negative temperature coefficient produced by multilayer technology |
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