GB805792A - Improvements in or relating to electrical resistors - Google Patents
Improvements in or relating to electrical resistorsInfo
- Publication number
- GB805792A GB805792A GB602456A GB602456A GB805792A GB 805792 A GB805792 A GB 805792A GB 602456 A GB602456 A GB 602456A GB 602456 A GB602456 A GB 602456A GB 805792 A GB805792 A GB 805792A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- temperature
- agent
- mixture
- produced
- 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
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 2
- 229910052749 magnesium Inorganic materials 0.000 abstract 2
- 239000011777 magnesium Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- 229910052719 titanium Inorganic materials 0.000 abstract 2
- 239000010936 titanium Substances 0.000 abstract 2
- 229940124024 weight reducing agent Drugs 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 abstract 1
- 239000006230 acetylene black Substances 0.000 abstract 1
- 239000012298 atmosphere Substances 0.000 abstract 1
- 239000005388 borosilicate glass Substances 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000002270 dispersing agent Substances 0.000 abstract 1
- 238000010304 firing Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 abstract 1
- 239000001095 magnesium carbonate Substances 0.000 abstract 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
- 239000012188 paraffin wax Substances 0.000 abstract 1
- 239000000454 talc Substances 0.000 abstract 1
- 229910052623 talc Inorganic materials 0.000 abstract 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- 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
- H01C7/02—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 positive temperature coefficient
- H01C7/022—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 positive temperature coefficient mainly consisting of non-metallic substances
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
805,792. Temperature-sensitive resistors. WELWYN ELECTRICAL LABORATORIES Ltd., and BROWNING, J. Feb. 27, 1956, No. 6024/56. Class 37. A temperature-sensitive resistor comprising an oxide of titanium, is produced by heating a mixture of materials including a solid reducing- agent, in a neutral atmosphere, to 1100- 1250‹ C. to form a titanium suboxide. The solid reducing agent may consist of carbon, ferrous oxide, ferrosilicon or a hydrocarbon such as paraffin wax. In one example, 91.5 per cent of magnesium titanate, 3.67 per cent of ground borosilicate glass, 0.25 per cent of acetylene black and 4.58 per cent of talc were mixed with a little of a dispersing agent such as " Teepol " (Registered Trade Mark) in water, milled, filtered, dried, ground and pressed into suitable shapes, and fired in a nitrogen atmosphere at a temperature of 1150‹ C. The magnesium titanate may be produced by firing a mixture of rutile and magnesium carbonate at 950-1150‹ C. The resulting body has low porosity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB602456A GB805792A (en) | 1956-02-27 | 1956-02-27 | Improvements in or relating to electrical resistors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB602456A GB805792A (en) | 1956-02-27 | 1956-02-27 | Improvements in or relating to electrical resistors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB805792A true GB805792A (en) | 1958-12-10 |
Family
ID=9807026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB602456A Expired GB805792A (en) | 1956-02-27 | 1956-02-27 | Improvements in or relating to electrical resistors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB805792A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1261437B (en) * | 1963-09-27 | 1968-02-15 | Philips Nv | Process for producing a semiconducting resistor material and a semiconductor resistor made from this material |
-
1956
- 1956-02-27 GB GB602456A patent/GB805792A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1261437B (en) * | 1963-09-27 | 1968-02-15 | Philips Nv | Process for producing a semiconducting resistor material and a semiconductor resistor made from this material |
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