DE520083C - Device for making unmodulated telegraphic characters audible - Google Patents

Device for making unmodulated telegraphic characters audible

Info

Publication number
DE520083C
DE520083C DET37053D DET0037053D DE520083C DE 520083 C DE520083 C DE 520083C DE T37053 D DET37053 D DE T37053D DE T0037053 D DET0037053 D DE T0037053D DE 520083 C DE520083 C DE 520083C
Authority
DE
Germany
Prior art keywords
unmodulated
audible
making
telegraphic characters
telegraphic
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
DET37053D
Other languages
German (de)
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.)
Telefunken AG
Original Assignee
Telefunken AG
Publication date
Priority to DET37053D priority Critical patent/DE520083C/en
Priority to GB1748230A priority patent/GB344738A/en
Application granted granted Critical
Publication of DE520083C publication Critical patent/DE520083C/en
Expired legal-status Critical Current

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
    • H04B1/06—Receivers
    • H04B1/16—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Amplifiers (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Description

*) Von dem Patentsucher ist als der Erfinder angegeben worden:*) The patent seeker stated as the inventor:

Dr. Gerhard B. Hagen in Berlin.Dr. Gerhard B. Hagen in Berlin.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

BERLIN. GEDBUCKT IN DER REICHSDRUCKEREIBERLIN. PRINTED IN THE REICHSDRUCKEREI

Claims (2)

Patentansprüche:Patent claims: i. Vorrichtung zur Hörbarmachung unmodulierter telegraphischer Zeichen, dadurch gekennzeichnet, daß im Anodenkreis der Audionröhre ein hochohmiger Widerstand vorgesehen ist und parallel zu diesem, eine mit einem Telephon in Serie geschaltete Glimmröhre, zu welcher sich ein Kondensator im Nebenschluß befindet. i. Device for making unmodulated telegraphic characters audible, characterized in that a high-value resistor is provided in the anode circuit of the audio tube and is parallel to this, a glow tube connected in series with a telephone, to which a capacitor is shunted. Vorrichtung nach Anspruch 1, ge-Device according to claim 1, ge 2. g p2. g p kennzeichnet durch einen parallel zur Anodenbatterie liegenden Potentiometerwiderstand, von welchem die Gleich-Stromspannung der Glimmröhre abgegriffen wird.characterized by a potentiometer resistor parallel to the anode battery, from which the DC voltage of the glow tube is tapped.
DET37053D Device for making unmodulated telegraphic characters audible Expired DE520083C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DET37053D DE520083C (en) Device for making unmodulated telegraphic characters audible
GB1748230A GB344738A (en) 1930-06-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET37053D DE520083C (en) Device for making unmodulated telegraphic characters audible

Publications (1)

Publication Number Publication Date
DE520083C true DE520083C (en) 1931-03-07

Family

ID=7559843

Family Applications (1)

Application Number Title Priority Date Filing Date
DET37053D Expired DE520083C (en) Device for making unmodulated telegraphic characters audible

Country Status (2)

Country Link
DE (1) DE520083C (en)
GB (1) GB344738A (en)

Also Published As

Publication number Publication date
GB344738A (en) 1931-03-12

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