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 telephony

Info

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
Application number
GB313758A
Inventor
Vladimir Vachala
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tesla AS
Original Assignee
Tesla AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DENDAT1066629D priority Critical patent/DE1066629B/de
Application filed by Tesla AS filed Critical Tesla AS
Priority to GB313758A priority patent/GB857266A/en
Publication of GB857266A publication Critical patent/GB857266A/en
Expired legal-status Critical Current

Links

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.
GB313758A 1958-01-30 1958-01-30 Device for producing a number of carrier frequencies, in particular for multichannel telephony Expired GB857266A (en)

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)

Also Published As

Publication number Publication date
DE1066629B (en)

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