GB640500A - Air core inductor for radio-frequencies with pre-determined dynamic resistance - Google Patents
Air core inductor for radio-frequencies with pre-determined dynamic resistanceInfo
- Publication number
- GB640500A GB640500A GB822546A GB822546A GB640500A GB 640500 A GB640500 A GB 640500A GB 822546 A GB822546 A GB 822546A GB 822546 A GB822546 A GB 822546A GB 640500 A GB640500 A GB 640500A
- Authority
- GB
- United Kingdom
- Prior art keywords
- series
- turns
- dynamic resistance
- inductor
- frequencies
- 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
- 239000004020 conductor Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/02—Fixed inductances of the signal type without magnetic core
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
640,500. Inductances. HOLZER, R. C. DE. April 16, 1946, No. 8225. [Class 38 (ii)] An air-cored inductance comprises two series of turns of the same diameter, the turns of part of one series 8 lying between the same number of turns of the other series 11, the end of one series being connected to the beginning of the other. To make a prototype inductor having required characteristics, the first series of turns 14, Fig. 6, is formed by winding a conductor round a notched cruciform former of low loss material. A second series of turns 17 is wound on the former with its turns partly interspaced with series 14 and its beginning 16 is connected to the end of the first series by a clamp 20. In order to adjust the characteristics of the inductor, clamp 20 may be loosened and the two series rotated relatively. Three series of turns, wire of rectangular cross-section, and stranded wire may be used. Prototype inductances so made may be copied, either exactly or with different dimensions obtained by applying the known laws of similarity. It is stated that the characteristic with which the invention is particularly concerned is the coefficient x in the formula R d = K.f x , where R d is the dynamic resistance and f the frequency which is above 3 megacycles/sec. Numerical examples are given.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB822546A GB640500A (en) | 1946-04-16 | 1946-04-16 | Air core inductor for radio-frequencies with pre-determined dynamic resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB822546A GB640500A (en) | 1946-04-16 | 1946-04-16 | Air core inductor for radio-frequencies with pre-determined dynamic resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB640500A true GB640500A (en) | 1950-07-19 |
Family
ID=9848352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB822546A Expired GB640500A (en) | 1946-04-16 | 1946-04-16 | Air core inductor for radio-frequencies with pre-determined dynamic resistance |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB640500A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013091683A1 (en) * | 2011-12-20 | 2013-06-27 | Alstom Technology Ltd | High impedance air core reactor |
| RU2593266C2 (en) * | 2014-09-04 | 2016-08-10 | Открытое акционерное общество "Омский научно-исследовательский институт приборостроения" (ОАО "ОНИИП") | Inductance coil |
| CN117316606A (en) * | 2023-11-28 | 2023-12-29 | 季华实验室 | High-precision radio frequency air core inductor and preparation method thereof |
-
1946
- 1946-04-16 GB GB822546A patent/GB640500A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013091683A1 (en) * | 2011-12-20 | 2013-06-27 | Alstom Technology Ltd | High impedance air core reactor |
| US9633777B2 (en) | 2011-12-20 | 2017-04-25 | Alstom Technology Ltd. | High impedance air core reactor |
| RU2593266C2 (en) * | 2014-09-04 | 2016-08-10 | Открытое акционерное общество "Омский научно-исследовательский институт приборостроения" (ОАО "ОНИИП") | Inductance coil |
| CN117316606A (en) * | 2023-11-28 | 2023-12-29 | 季华实验室 | High-precision radio frequency air core inductor and preparation method thereof |
| CN117316606B (en) * | 2023-11-28 | 2024-03-19 | 季华实验室 | High-precision radio frequency air core inductor and preparation method thereof |
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