US1540387A - Telegraph receiving apparatus - Google Patents

Telegraph receiving apparatus Download PDF

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Publication number
US1540387A
US1540387A US688503A US68850324A US1540387A US 1540387 A US1540387 A US 1540387A US 688503 A US688503 A US 688503A US 68850324 A US68850324 A US 68850324A US 1540387 A US1540387 A US 1540387A
Authority
US
United States
Prior art keywords
receiving apparatus
relay
impedance
current
tube
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 - Lifetime
Application number
US688503A
Other languages
English (en)
Inventor
Clausing Arthur
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens Corp
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 NL15282D priority Critical patent/NL15282C/xx
Priority to GB16846/23A priority patent/GB210389A/en
Application filed by Siemens Corp filed Critical Siemens Corp
Priority to US688503A priority patent/US1540387A/en
Application granted granted Critical
Publication of US1540387A publication Critical patent/US1540387A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0278—Arrangements for impedance matching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0292—Arrangements specific to the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/24—Relay circuits using discharge tubes or semiconductor devices

Definitions

  • AE'rHuaoLAusINe or BERLIN-CHARLOTTENBURG, GER-MANr, nssreNon To SIEMENS & HALSKE, AKTIENGESELLSCHAFT, or SIEMENSSTADT, NEAR BERLIN, GERMANY,
  • My invention relates toreceiving apparatus for alternating and direct current telegraphy and kindred transmission of intelligence.
  • the receiving apparatus for example the telegraph relay for the first harmonic of the telegraph current, to the charmteristic impedance of the line or to the impedance of the amplifier or rectifier tube to which the relay is connected.
  • the first harmonic is taken to be the value of (a com .uted from equation 2, as already stated. of signal impulses and intervals of unequal, lengths or durations the adaptation is offected to thesignal impulse of the shortest duration. This holds good for alternating.
  • the self-inductance f'the relay must be made of such value that ZzoL
  • the same equation also holds good for the rectifier in alternating current telegraphy. If the tube resistance be equal to Z, then the self-inductance L of the relay must be equal to 1 long positive a'nd negative'signal impulses and 600 telegraph'signals per minute I r a) n- 125 If a receiving relay is connected in series with a rectifier of say 30000 ohms internal resistance, then a rough calculation to ascertain the necessary self-inductance of the rep DCving relay will give the result Z L 0 henry.
  • auxilia means are in such cases employed to effect a suitable adaptation.
  • the translator is connected between the tube and the relay and for the first harmonic frequency 0) adapted 9 on the one hand as closely as possible to. the tube, and on the other hand to the relay.
  • Figs. 1 and 2 represent diagrams of the improved receiver circuits according to my invention. 1 Similar letters of reference indicate similar parts. in the various figures of the drawmg. a
  • the relay is according to my invention coupled with the anode circuit of a three electrode thermionic tube a b means ofv a translatonU, as shown in Figs. 1 and 2, the translator being adapted as previously described.
  • receiver circuits according to this invention may equally well be employed in connection with oscillatory circuits, receiving equipments for radio telcgraphyand the like.
  • My invention is furthermore, by no means confined to the use of translators as ada ters but any suitable method of adaptation may be used with equal advantage. If, for instance, filter chains are connected in the indefinite receiver circuit their electrical values may be'so chosen that they may likewise be employed fort-he adaptation of the. receiving relay to the tube or theline. What I claim as my invention and desire 7 to secure by Letters Patent is 2- 1. A receiving system for alternating and direct current telegraphy having an impulse current of indefinitefrequency, .in which system the impedance of the receiving apparatus is made substantially equal to the 1m-.
  • pedance'of-the circuit element from which the receiving apparatus receives the current -the value of said impedances being determined by a frequency constituting the 50 succession of impulses of shortest duration in said impulse current of indefinite frequency for the purpose of transmitting the maximum amount of energy.
  • a receiving system carrying. an impulse current of indefinite frequency and containing a thermionic tube in its circuit said tube being connected to the receiving apparatus, the impedance of said receiving apparatus being equal to the out ut impedance of said tube, the value 0? said impedance being determined by a frequency constituting the succession of impulses of shortest duration in said im ulse current of freqnency, for t e purpose of transmitting t e maximum amount" of en ergy. 4 g
  • a receiving system carrying an impulse current of indefinite frequency and containing a thermionic rectifier tube in its circuit, said tube being connected to the receiving apparatus, the impedance of said receiving apparatus being equal to the output impedance of said tube, the value of said impedance being determined by a he quency constituting the succession of impulses of shortest duration in said impulse current of indefinite frequency, for the purpose of transmitting the maximum amount of energy.
  • a receiving system carrying ,an impulse current of indefinite frequency and being connected to a line, in combination with an intermediate element connected to said line and to the receiving apparatus, the
  • a receiving system carrying an impulse current of indefinite frequency and containing a thermionic tube in its c1rc'u1t in combination with an intermediate elememes? ment, connected to said tube and to the re ceivi'ng apparatus, the input impedance of said intermediate element being equal to the output impedance of said tube and the output impedance of said intermediate element being equal to the impedance of said receiving apparatus, the value of said imped ances being determined by a frequency corresponding to the frequency given by the succession of impulses of shortest duration in said impulse current of indefinite frequency, "for the purpose of transmitting the maximum amount of energy.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
US688503A 1924-01-25 1924-01-25 Telegraph receiving apparatus Expired - Lifetime US1540387A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL15282D NL15282C (enrdf_load_stackoverflow) 1924-01-25
GB16846/23A GB210389A (enrdf_load_stackoverflow) 1924-01-25 1923-06-28
US688503A US1540387A (en) 1924-01-25 1924-01-25 Telegraph receiving apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US688503A US1540387A (en) 1924-01-25 1924-01-25 Telegraph receiving apparatus

Publications (1)

Publication Number Publication Date
US1540387A true US1540387A (en) 1925-06-02

Family

ID=24764678

Family Applications (1)

Application Number Title Priority Date Filing Date
US688503A Expired - Lifetime US1540387A (en) 1924-01-25 1924-01-25 Telegraph receiving apparatus

Country Status (3)

Country Link
US (1) US1540387A (enrdf_load_stackoverflow)
GB (1) GB210389A (enrdf_load_stackoverflow)
NL (1) NL15282C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL15282C (enrdf_load_stackoverflow)
GB210389A (enrdf_load_stackoverflow) 1924-10-28

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