GB149409A - Improvements in and relating to systems of radio communication - Google Patents
Improvements in and relating to systems of radio communicationInfo
- Publication number
- GB149409A GB149409A GB1166119A GB1166119A GB149409A GB 149409 A GB149409 A GB 149409A GB 1166119 A GB1166119 A GB 1166119A GB 1166119 A GB1166119 A GB 1166119A GB 149409 A GB149409 A GB 149409A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- current
- load
- generator
- varying
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Control Of Multiple Motors (AREA)
Abstract
149,409. British Thomson - Houston Co., (General Electric Co.). May 9, 1919. Systems for alternating-current motors only.- Relates to a device for controlling the torque of an alternating current driving motor by varying the current supply as the load on the motor is changed. The current supplied to the motor 9 is varied by varying the magnetic saturation of cores carrying windings 12 and hence varying the impedance of the windings, which are in series with the supply conductors 10. The current for saturating the cores is obtained from a direct current generator 18. The approximate adjustment of the torque of the motor 9 is obtained by means of a resistance 19 included in the circuit which supplies current from the generator 18 to the coils 13. As the load on the motor is increased, the current supplied by the generator 18 to the saturation coils 13 is automatically increased, the impedance of the windings 12 is decreased, and hence the current supplied to the motor increases to correspond to the change in load on the motor. Specification 103,842 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1166119A GB149409A (en) | 1919-05-09 | 1919-05-09 | Improvements in and relating to systems of radio communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1166119A GB149409A (en) | 1919-05-09 | 1919-05-09 | Improvements in and relating to systems of radio communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB149409A true GB149409A (en) | 1920-08-09 |
Family
ID=9990343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1166119A Expired GB149409A (en) | 1919-05-09 | 1919-05-09 | Improvements in and relating to systems of radio communication |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB149409A (en) |
-
1919
- 1919-05-09 GB GB1166119A patent/GB149409A/en not_active Expired
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