GB488978A - Electric wave filters - Google Patents
Electric wave filtersInfo
- Publication number
- GB488978A GB488978A GB29978/37A GB2997837A GB488978A GB 488978 A GB488978 A GB 488978A GB 29978/37 A GB29978/37 A GB 29978/37A GB 2997837 A GB2997837 A GB 2997837A GB 488978 A GB488978 A GB 488978A
- Authority
- GB
- United Kingdom
- Prior art keywords
- inductances
- pass
- low
- spindle
- threaded
- 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
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/76—Wired systems
- H04H20/77—Wired systems using carrier waves
- H04H20/81—Wired systems using carrier waves combined with telephone network over which the broadcast is continuously available
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Coils Or Transformers For Communication (AREA)
- Filters And Equalizers (AREA)
Abstract
488,978. Impedance networks ; inductances. LORENZ AKT.-GES., C. Nov. 2, 1937, No. 29978. Convention date, Nov. 3, 1936. [Class 40 (iii)] [Also in Group XXXV] In a separator for use at subscribers' stations for filtering telephone currents from radiofrequency currents, comprising inductances with hollow cores of high-frequency iron threaded on a common spindle, and provided with a base plate 1, preferably of moulded insulating material, the inductances in the high-pass and low-pass portions are located on opposite sides of the condensers. The condensers for both the high-pass and the low-pass portions of the separator are housed in a casing 4 screwed to a strap 3. The inductances for the low-pass portion are threaded on a spindle 7 supported on arms 8, and those for the high-pass portion are threaded together with a transformer 15 on a similar spindle 18. An insulating plate 21, inserted between the inductances, carries soldering-tabs 22 for the internal connections, and terminals 2 are provided for the external connections. A cover 19 fits over a beading 26.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE488978X | 1936-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB488978A true GB488978A (en) | 1938-07-18 |
Family
ID=6543888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29978/37A Expired GB488978A (en) | 1936-11-03 | 1937-11-02 | Electric wave filters |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2201254A (en) |
| GB (1) | GB488978A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2786940A (en) * | 1956-01-13 | 1957-03-26 | Nat Union Electric Corp | Superheterodyne receiver with common variable saturating means having tracking provision for tuning inductances |
-
1937
- 1937-11-02 GB GB29978/37A patent/GB488978A/en not_active Expired
- 1937-11-02 US US172353A patent/US2201254A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2201254A (en) | 1940-05-21 |
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