GB857266A - Device for producing a number of carrier frequencies, in particular for multichannel telephony - Google Patents
Device for producing a number of carrier frequencies, in particular for multichannel telephonyInfo
- Publication number
- GB857266A GB857266A GB313758A GB313758A GB857266A GB 857266 A GB857266 A GB 857266A GB 313758 A GB313758 A GB 313758A GB 313758 A GB313758 A GB 313758A GB 857266 A GB857266 A GB 857266A
- Authority
- GB
- United Kingdom
- Prior art keywords
- openings
- screen
- cathode
- fundamental frequency
- electron beam
- 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
- 238000010894 electron beam technology Methods 0.000 abstract 3
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/06—Arrangements for supplying the carrier waves ; Arrangements for supplying synchronisation signals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
- H01J31/06—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with more than two output electrodes, e.g. for multiple switching or counting
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Particle Accelerators (AREA)
Abstract
857,266. Electron beam apparatus. TESLA, NARODNI PODNIK. Jan. 30, 1958, No. 3137/58. Class 39(1). In a device for producing a number of carrier frequencies, particularly for use in multichannel telephony, an electron beam, emitted by an axially-extendng cathode K, is rotated magnetically at a fundamental frequency over a screen S<SP>1</SP> arranged concentrically around the cathode and provided with rows of openings, each row lying opposite a corresponding anode A, so that a plurality of harmonics of the fundamental frequency are derived separately and simultaneously. The anodes are preferably screened from each other by grounded metallic rings ST. The electron beam emitted by the cathode over its entire length may have one or two wings and may be rotated by a magnetic field generated by means of a twophase coil system, Fig. 2, not shown. A regular impulse sequence is created on each anode the frequency of which is the product of the fundamental frequency and the number, n, of openings in the corresponding row of the screen S<SP>1</SP> for a single beam, and for a double beam if n is odd ; or half this product for a double beam if n is even. By suitably selecting the shape of the openings in the screen S<SP>1</SP> it is possible to obtain current waves of approximately sinusoidal or other desired form, e.g. trapezoidal.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DENDAT1066629D DE1066629B (en) | 1958-01-30 | ||
GB313758A GB857266A (en) | 1958-01-30 | 1958-01-30 | Device for producing a number of carrier frequencies, in particular for multichannel telephony |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB313758A GB857266A (en) | 1958-01-30 | 1958-01-30 | Device for producing a number of carrier frequencies, in particular for multichannel telephony |
Publications (1)
Publication Number | Publication Date |
---|---|
GB857266A true GB857266A (en) | 1960-12-29 |
Family
ID=9752632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB313758A Expired GB857266A (en) | 1958-01-30 | 1958-01-30 | Device for producing a number of carrier frequencies, in particular for multichannel telephony |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1066629B (en) |
GB (1) | GB857266A (en) |
-
0
- DE DENDAT1066629D patent/DE1066629B/de active Pending
-
1958
- 1958-01-30 GB GB313758A patent/GB857266A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1066629B (en) |
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