GB342255A - Thermionic amplifier apparatus for use in the reproduction of sound - Google Patents

Thermionic amplifier apparatus for use in the reproduction of sound

Info

Publication number
GB342255A
GB342255A GB3236929A GB3236929A GB342255A GB 342255 A GB342255 A GB 342255A GB 3236929 A GB3236929 A GB 3236929A GB 3236929 A GB3236929 A GB 3236929A GB 342255 A GB342255 A GB 342255A
Authority
GB
United Kingdom
Prior art keywords
socket
reproduction
sound
valve
amplifier apparatus
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
GB3236929A
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.)
HEINRICH JOHANNES KUCHENMEISTE
Original Assignee
HEINRICH JOHANNES KUCHENMEISTE
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
Application filed by HEINRICH JOHANNES KUCHENMEISTE filed Critical HEINRICH JOHANNES KUCHENMEISTE
Priority to GB3236929A priority Critical patent/GB342255A/en
Priority to FR683966D priority patent/FR683966A/en
Publication of GB342255A publication Critical patent/GB342255A/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
    • H04B1/20—Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)

Abstract

342,255. Two-part couplings. KœCHENMEISTER, H. J., 1, F³rtherstrasse, Berlin. Oct. 24, 1929, No. 32369. [Class 38 (i).] Gramo phone pick-ups a or like auxiliary instruments are connected to the amplifier of a wireless receiving-set by providing on one or both of the pickup leads b, c a curved contact member e adapted to fit between a valve-pin g and its socket h. Preferably the member e is inserted in the grid socket of an amplifying-valve, and the second lead carries a spring contact plug d or like terminal for connection to an earthed socket or to a filament battery terminal.
GB3236929A 1929-10-24 1929-10-24 Thermionic amplifier apparatus for use in the reproduction of sound Expired GB342255A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3236929A GB342255A (en) 1929-10-24 1929-10-24 Thermionic amplifier apparatus for use in the reproduction of sound
FR683966D FR683966A (en) 1929-10-24 1929-10-26 Improvements made to sound reproduction devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3236929A GB342255A (en) 1929-10-24 1929-10-24 Thermionic amplifier apparatus for use in the reproduction of sound

Publications (1)

Publication Number Publication Date
GB342255A true GB342255A (en) 1931-01-26

Family

ID=10337536

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3236929A Expired GB342255A (en) 1929-10-24 1929-10-24 Thermionic amplifier apparatus for use in the reproduction of sound

Country Status (2)

Country Link
FR (1) FR683966A (en)
GB (1) GB342255A (en)

Also Published As

Publication number Publication date
FR683966A (en) 1930-06-19

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