GB631216A - Improved electrical resistance materials - Google Patents
Improved electrical resistance materialsInfo
- Publication number
- GB631216A GB631216A GB19263/47A GB1926347A GB631216A GB 631216 A GB631216 A GB 631216A GB 19263/47 A GB19263/47 A GB 19263/47A GB 1926347 A GB1926347 A GB 1926347A GB 631216 A GB631216 A GB 631216A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copper
- per cent
- oxides
- nickel
- cobalt
- 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)
- Non-Adjustable Resistors (AREA)
- Conductive Materials (AREA)
Abstract
631,216. Non-metal resistances. WESTERN ELECTRIC CO., Inc. July 18, 1947, No. 19263. Convention date, March 27, 1942. Drawings to Specification. [Class 37] Thermistor beads or discs are made from a resistance material which consists of an intimate mixture of oxides of manganese, cobalt, nickel and copper, wherein the atomic ratio of metals is such that the manganese content is from substantially 50 to 60 per cent and the copper from 1 to 5 per cent with respect to the total metal present and the amount of cobalt greater than the amount of nickel, both being greater than the amount of copper. The heat treatment for any composition within this definition, for example, any composition within the ranges 50 to 60 per cent manganese, 13 to 18 per cent nickel, 25 to 40 per cent cobalt and 1 to 5 per cent copper is carried out at a selected temperature within the range 800 to 1450 C. In the case of a resistance body in which the atomic ratio of metals is 50 Mn ; 16 Ni ; 30 Co ; 4Cu, 1250 C. is satisfactory. The raw materials may be in the form of oxides or other compounds which will produce an oxidic combination, for example, all or some of the materials may be combined in the form of finely powdered carbonates which mixture may be changed to a combination of oxides by suitable calcination. The copper may be introduced as a solution of copper nitrate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US436471A US2326580A (en) | 1942-03-27 | 1942-03-27 | Resistance material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB631216A true GB631216A (en) | 1949-10-28 |
Family
ID=23732533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19263/47A Expired GB631216A (en) | 1942-03-27 | 1947-07-18 | Improved electrical resistance materials |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2326580A (en) |
| AT (1) | AT178401B (en) |
| BE (1) | BE475405A (en) |
| CH (1) | CH266484A (en) |
| FR (1) | FR948142A (en) |
| GB (1) | GB631216A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2462162A (en) * | 1944-07-03 | 1949-02-22 | Bell Telephone Labor Inc | Metallic oxide resistor |
| US2645700A (en) * | 1949-08-27 | 1953-07-14 | Bell Telephone Labor Inc | Semiconductor of mixed nickel, manganese, and iron oxides |
| US2694050A (en) * | 1949-09-01 | 1954-11-09 | Bell Telephone Labor Inc | Thermally sensitive resistor |
| DE1085236B (en) * | 1952-11-27 | 1960-07-14 | Siemens Ag | Heat conductor with sintered-in connection contacts |
| NL105505C (en) * | 1956-01-31 | 1962-11-15 | ||
| FR2598021B1 (en) * | 1986-04-25 | 1990-10-19 | Lcc Cie Europ Composants El | COMPOSITIONS FOR THERMISTORS WITH NEGATIVE TEMPERATURE COEFFICIENT |
| CN115925391B (en) * | 2023-01-04 | 2023-07-04 | 山东中厦电子科技有限公司 | High-capacitance power type thermosensitive material and preparation method thereof |
-
0
- BE BE475405D patent/BE475405A/xx unknown
-
1942
- 1942-03-27 US US436471A patent/US2326580A/en not_active Expired - Lifetime
-
1947
- 1947-06-17 FR FR948142D patent/FR948142A/en not_active Expired
- 1947-06-30 CH CH266484D patent/CH266484A/en unknown
- 1947-07-18 GB GB19263/47A patent/GB631216A/en not_active Expired
-
1953
- 1953-03-09 AT AT178401D patent/AT178401B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| AT178401B (en) | 1954-05-10 |
| US2326580A (en) | 1943-08-10 |
| CH266484A (en) | 1950-01-31 |
| FR948142A (en) | 1949-07-22 |
| BE475405A (en) |
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