GB313524A - Improvements in synchronous electric motor systems - Google Patents
Improvements in synchronous electric motor systemsInfo
- Publication number
- GB313524A GB313524A GB18005/29A GB1800529A GB313524A GB 313524 A GB313524 A GB 313524A GB 18005/29 A GB18005/29 A GB 18005/29A GB 1800529 A GB1800529 A GB 1800529A GB 313524 A GB313524 A GB 313524A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motors
- frequency
- motor
- tuned
- current
- 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
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
- H04N5/067—Arrangements or circuits at the transmitter end
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Multiple Motors (AREA)
Abstract
313,524. Karolus, A. June 13, 1928, [Convention date]. Frequency, changing. - Synchronous electric motors suitable for television and other apparatus are fed from mains of low frequency transformed or tuned up to higher harmonic frequencies, and are used either as driving motors of the apparatus or as auxiliary synchronous motors coupled to main driving-motors. In one arrangement an alternating current network 1 supplies a 50-cycle current to a main motor 5, and current of tuned-up frequency to a synchronous motor 10. A frequency transformer 6, 8 has a variable resistance 7 to vary the current through the primary winding 6, the secondary winding 8 being tuned with the inductance of the motor 10 and the variable capacity 9 to a higher harmonic of the feed system e.g. 500 cycles. The picture transmission apparatus 11 is connected to the common shaft of the motors 5, 10, and motor 5 maintains synchronism with motors similarly fed by the circuit 1. The frequency transformation may be obtained by other means such as by the use of glow or arc discharge tubes. Rectification may be used to obtain frequency duplication.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE313524X | 1928-06-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB313524A true GB313524A (en) | 1930-05-01 |
Family
ID=6140976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18005/29A Expired GB313524A (en) | 1928-06-13 | 1929-06-12 | Improvements in synchronous electric motor systems |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR675795A (en) |
GB (1) | GB313524A (en) |
NL (1) | NL25786C (en) |
-
0
- NL NL25786D patent/NL25786C/xx active
-
1929
- 1929-05-27 FR FR675795D patent/FR675795A/en not_active Expired
- 1929-06-12 GB GB18005/29A patent/GB313524A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL25786C (en) | |
FR675795A (en) | 1930-02-14 |
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