CH402950A - Kohlemikrofonkapsel mit feuchtigkeitsgschützter Kohlekammer - Google Patents

Kohlemikrofonkapsel mit feuchtigkeitsgschützter Kohlekammer

Info

Publication number
CH402950A
CH402950A CH1428661A CH1428661A CH402950A CH 402950 A CH402950 A CH 402950A CH 1428661 A CH1428661 A CH 1428661A CH 1428661 A CH1428661 A CH 1428661A CH 402950 A CH402950 A CH 402950A
Authority
CH
Switzerland
Prior art keywords
carbon
moisture
protected
microphone capsule
chamber
Prior art date
Application number
CH1428661A
Other languages
English (en)
Inventor
Adam Adolf
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of CH402950A publication Critical patent/CH402950A/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Telephone Set Structure (AREA)
  • Measuring Fluid Pressure (AREA)
CH1428661A 1961-03-02 1961-12-07 Kohlemikrofonkapsel mit feuchtigkeitsgschützter Kohlekammer CH402950A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES72788A DE1161314B (de) 1961-03-02 1961-03-02 Kohlemikrofonkapsel mit feuchtigkeitsgeschuetzter Kohlekammer

Publications (1)

Publication Number Publication Date
CH402950A true CH402950A (de) 1965-11-30

Family

ID=7503475

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1428661A CH402950A (de) 1961-03-02 1961-12-07 Kohlemikrofonkapsel mit feuchtigkeitsgschützter Kohlekammer

Country Status (7)

Country Link
US (1) US3277247A (de)
BE (1) BE614554A (de)
CH (1) CH402950A (de)
DE (1) DE1161314B (de)
GB (1) GB957384A (de)
NL (2) NL142046B (de)
SE (1) SE325613B (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE898763C (de) * 1937-04-19 1953-12-03 Int Standard Electric Corp Kohlekoernermikrofon
CH220358A (de) * 1940-10-26 1942-03-31 Fides Gmbh Kapselmikrofon.
NL70196C (de) * 1947-10-31
DE1000049B (de) * 1954-12-23 1957-01-03 Merk Ag Telefonbau Friedrich Widerstandsmikrophon, insbesondere Kohlemikrophon

Also Published As

Publication number Publication date
NL275488A (de)
GB957384A (en) 1964-05-06
SE325613B (de) 1970-07-06
BE614554A (fr) 1962-07-02
US3277247A (en) 1966-10-04
NL142046B (nl) 1974-04-16
DE1161314B (de) 1964-01-16

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