GB916943A - Thermistors and method of manufacture - Google Patents
Thermistors and method of manufactureInfo
- Publication number
- GB916943A GB916943A GB1051660A GB1051660A GB916943A GB 916943 A GB916943 A GB 916943A GB 1051660 A GB1051660 A GB 1051660A GB 1051660 A GB1051660 A GB 1051660A GB 916943 A GB916943 A GB 916943A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbonate
- cobalt
- lithium
- oxide
- lead
- 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
-
- 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)
- Thermistors And Varistors (AREA)
Abstract
916,943. Semi-conductor devices. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. March 24, 1960 [April 24, 1959], No. 10516/60. Class 37. A thermistor consists of the oxides of cobalt, lithium and copper, together with a carbonate of oxide of lead. Percentages of the oxide ions are: cobalt 88.3-99.75%, lithium 0.07- 1.2%, copper 0-5%, and lead 0.18-5.5%. In a particular example constituents are weighed in the following proportions: calcined cobalt carbonate 88.5, crude cobalt carbonate 10, lithium carbonate 3.5, and yellow lead oxide 1. After weighing these constituents are ground in alcohol for 24 hours and sieved. An organic binder such as mineral wax or an aqueous gel of polyvinyl alcohol is added and the mixture again sieved. Finally the material is moulded at 2 metric tons/cm.<SP>2</SP> and the pieces calcined at 1230‹ C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR793056A FR75622E (en) | 1959-04-24 | 1959-04-24 | Thermistor and manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB916943A true GB916943A (en) | 1963-01-30 |
Family
ID=8714074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1051660A Expired GB916943A (en) | 1959-04-24 | 1960-03-24 | Thermistors and method of manufacture |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR75622E (en) |
| GB (1) | GB916943A (en) |
-
1959
- 1959-04-24 FR FR793056A patent/FR75622E/en not_active Expired
-
1960
- 1960-03-24 GB GB1051660A patent/GB916943A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR75622E (en) | 1961-07-21 |
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