GB519451A - Improvements in high frequency coupling arrangements - Google Patents
Improvements in high frequency coupling arrangementsInfo
- Publication number
- GB519451A GB519451A GB2783838A GB2783838A GB519451A GB 519451 A GB519451 A GB 519451A GB 2783838 A GB2783838 A GB 2783838A GB 2783838 A GB2783838 A GB 2783838A GB 519451 A GB519451 A GB 519451A
- Authority
- GB
- United Kingdom
- Prior art keywords
- value
- core
- inductance
- coils
- high frequency
- 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
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
- H03H7/0169—Intermediate frequency filters
- H03H7/0184—Intermediate frequency filters with ferromagnetic core
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
519,451. Inductances ; transformers. POLYDOROFF, W. J. Sept. 23, 1938, No. 27838. [Class 38 (ii)] In an inductance the value of which is adjusted by movement of an iron dust core, the relationship between the dimensions of the core and winding is so chosen that the Q value of the coil remains substantially unaffected by alteration in the value of the inductance. A pair of such coils 4 for coupling intermediate frequency stages in a superheterodyne radio receiver have their cores 6 mounted on a common adjusting rod 7 so as to remain a fixed distance apart and one of the coils, e.g., the upper one, is arranged for independent adjustment with respect to its core, e.g., by a screwed sleeve 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2783838A GB519451A (en) | 1938-09-23 | 1938-09-23 | Improvements in high frequency coupling arrangements |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2783838A GB519451A (en) | 1938-09-23 | 1938-09-23 | Improvements in high frequency coupling arrangements |
Publications (1)
Publication Number | Publication Date |
---|---|
GB519451A true GB519451A (en) | 1940-03-27 |
Family
ID=10266123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2783838A Expired GB519451A (en) | 1938-09-23 | 1938-09-23 | Improvements in high frequency coupling arrangements |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB519451A (en) |
-
1938
- 1938-09-23 GB GB2783838A patent/GB519451A/en not_active Expired
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