GB501132A - Improvements in or relating to electric wave filters - Google Patents
Improvements in or relating to electric wave filtersInfo
- Publication number
- GB501132A GB501132A GB20148/37A GB2014837A GB501132A GB 501132 A GB501132 A GB 501132A GB 20148/37 A GB20148/37 A GB 20148/37A GB 2014837 A GB2014837 A GB 2014837A GB 501132 A GB501132 A GB 501132A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- low
- phase
- coils
- legs
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
-
- 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
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
-
- 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)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Filters And Equalizers (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
501,132. Preventing inductive disturbance. LORENZ AKT.-GES., C. July 21, 1937, No. 20148. Convention date, Sept. 4, 1936. [Class 40 (iv)] [Also in Group XL] In a system in which high-frequency and low-frequency signalling currents are superimposed, a low-pass filter is so constructed as to attenuate high-frequency currents which are in phase coincidence as well as those which are in phase opposition in the two legs of the line. In the system shown, high-frequency signals pass from terminals a, b to receiver 2 through a high-pass filter 1, while low-frequency signals pass to a receiver 9 over a low-pass filter 10. High-frequency disturbances originating at 9 are choked by the coils 3, 4 and go to earth through condensers 5, 6, being in phase in the two legs of the line ; the coils 7, 8 are so coupled that they neutralize one another's inductance in this case. On the other hand, any highfrequency disturbances which circulate in the loop so as to be in opposite phase in the two legs are choked by the coils 7, 8.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE501132X | 1936-09-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB501132A true GB501132A (en) | 1939-02-21 |
Family
ID=6545724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20148/37A Expired GB501132A (en) | 1936-09-04 | 1937-07-21 | Improvements in or relating to electric wave filters |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2144950A (en) |
| FR (1) | FR813929A (en) |
| GB (1) | GB501132A (en) |
| NL (1) | NL47533C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS498265A (en) * | 1972-05-10 | 1974-01-24 | ||
| US4672337A (en) * | 1985-11-27 | 1987-06-09 | The United States Of America As Represented By The Secretary Of The Navy | VLF/HF EMI filter |
| WO1994008417A1 (en) * | 1992-09-25 | 1994-04-14 | Tom Denedios | Radio frequency interference filter |
| CN106330129A (en) * | 2016-08-31 | 2017-01-11 | 安徽赛福电子有限公司 | High and low frequency combined network filter |
| GB2563192B (en) * | 2017-03-16 | 2021-02-24 | Rosemount Measurement Ltd | Improvements in or relating to vibrating element apparatus |
-
0
- NL NL47533D patent/NL47533C/xx active
-
1936
- 1936-11-25 FR FR813929D patent/FR813929A/en not_active Expired
-
1937
- 1937-07-10 US US153072A patent/US2144950A/en not_active Expired - Lifetime
- 1937-07-21 GB GB20148/37A patent/GB501132A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL47533C (en) | |
| FR813929A (en) | 1937-06-11 |
| US2144950A (en) | 1939-01-24 |
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