BE488632A - - Google Patents

Info

Publication number
BE488632A
BE488632A BE488632DA BE488632A BE 488632 A BE488632 A BE 488632A BE 488632D A BE488632D A BE 488632DA BE 488632 A BE488632 A BE 488632A
Authority
BE
Belgium
Application number
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.)
Publication of BE488632A publication Critical patent/BE488632A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
BE488632D 1948-04-23 BE488632A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB277063X 1948-04-23

Publications (1)

Publication Number Publication Date
BE488632A true BE488632A (enrdf_load_stackoverflow)

Family

ID=10263970

Family Applications (1)

Application Number Title Priority Date Filing Date
BE488632D BE488632A (enrdf_load_stackoverflow) 1948-04-23

Country Status (5)

Country Link
BE (1) BE488632A (enrdf_load_stackoverflow)
CH (1) CH277063A (enrdf_load_stackoverflow)
DE (1) DE873102C (enrdf_load_stackoverflow)
FR (2) FR984897A (enrdf_load_stackoverflow)
GB (1) GB670586A (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE952823C (de) * 1953-12-02 1956-11-22 Friedrich Reiner Befestigung von Kohleelektroden an Metall- oder Kunststoffmembranen fuer Kohlekoernermikrofone
DE960998C (de) * 1954-02-26 1957-03-28 Standard Elek K Ag Kohlemikrofon mit beweglicher Tauchelektrode
DE1061825B (de) * 1954-02-26 1959-07-23 Hans Widmaier Kohlegriessmikrophon-Sprechkapsel
DE1095318B (de) * 1955-03-18 1960-12-22 Standard Elektrik Lorenz Ag Kohlemikrofon mit beweglicher Tauchelektrode
DE1125485B (de) * 1959-03-25 1962-03-15 Siemens Ag Kohlemikrofon
DE1181745B (de) * 1962-09-15 1964-11-19 Telefonbau Widerstandsmikrofon, insbesondere Kohlemikrofon

Also Published As

Publication number Publication date
DE873102C (de) 1953-04-09
GB670586A (en) 1952-04-23
FR63027E (fr) 1955-07-13
FR984897A (fr) 1951-07-11
CH277063A (de) 1951-08-15

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