GB368533A - Improvements in radio-receiving apparatus - Google Patents
Improvements in radio-receiving apparatusInfo
- Publication number
- GB368533A GB368533A GB8630/31A GB863031A GB368533A GB 368533 A GB368533 A GB 368533A GB 8630/31 A GB8630/31 A GB 8630/31A GB 863031 A GB863031 A GB 863031A GB 368533 A GB368533 A GB 368533A
- Authority
- GB
- United Kingdom
- Prior art keywords
- impedance
- diagonal
- valve
- cathode
- earth
- 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
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1018—Means associated with receiver for limiting or suppressing noise or interference noise filters connected between the power supply and the receiver
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Amplifiers (AREA)
Abstract
368,533. Valve amplifying circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. March 20, 1931, No. 8630. Convention date, April 8, 1930. [Class 40 (v).] In order to prevent disturbances in wireless receivers the valves of which derive their anode voltage from a power supply network, the gridcathode circuit of at least one of the valves lies in one diagonal of a bridge connection the other diagonal being between earth and the cathode of the next valve. In the known arrangement of Fig. 1, the receiver earth connection is shown as a fictitious impedance 10, across which a disturbing voltage Vj is induced due to coupling of the leads 14, 15 with a disturbing source. This disturbing voltage reaches the grid of 4 through the circuit 3, 2, 11 the latter being the capacity of the aerial. According to the invention, an impedance 22, constituted by the fictitious impedance 10 and the addition of a further impedance, is connected between the cathode of valve 5 and earth, one end being connected to the grid of valve 4 through a small condenser 16 while the cathode of 4 is connected to the impedance by a slider. The tuned circuit 3 thus constitutes one diagonal and the impedance 22 the other diagonal of the bridge. The invention is applicable to high or lowfrequency circuits.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL368533X | 1930-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB368533A true GB368533A (en) | 1932-03-10 |
Family
ID=19785508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8630/31A Expired GB368533A (en) | 1930-04-08 | 1931-03-20 | Improvements in radio-receiving apparatus |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE615138C (en) |
| FR (1) | FR713354A (en) |
| GB (1) | GB368533A (en) |
| NL (1) | NL33518C (en) |
-
0
- NL NL33518D patent/NL33518C/xx active
-
1931
- 1931-03-16 FR FR713354D patent/FR713354A/en not_active Expired
- 1931-03-20 GB GB8630/31A patent/GB368533A/en not_active Expired
- 1931-03-26 DE DEN31807D patent/DE615138C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR713354A (en) | 1931-10-27 |
| DE615138C (en) | 1935-06-27 |
| NL33518C (en) |
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