CH274627A - Kohlemikrophon. - Google Patents

Kohlemikrophon.

Info

Publication number
CH274627A
CH274627A CH274627DA CH274627A CH 274627 A CH274627 A CH 274627A CH 274627D A CH274627D A CH 274627DA CH 274627 A CH274627 A CH 274627A
Authority
CH
Switzerland
Prior art keywords
carbon microphone
microphone
carbon
Prior art date
Application number
Other languages
English (en)
Inventor
Ag Albiswerk Zuerich
Original Assignee
Siemens Ag Albis
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 Albis filed Critical Siemens Ag Albis
Publication of CH274627A publication Critical patent/CH274627A/de

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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
CH274627D 1949-05-07 1949-05-07 Kohlemikrophon. CH274627A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH872533X 1949-05-07

Publications (1)

Publication Number Publication Date
CH274627A true CH274627A (de) 1951-04-15

Family

ID=4544142

Family Applications (1)

Application Number Title Priority Date Filing Date
CH274627D CH274627A (de) 1949-05-07 1949-05-07 Kohlemikrophon.

Country Status (2)

Country Link
CH (1) CH274627A (de)
DE (1) DE872533C (de)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE480818C (de) * 1925-06-23 1929-08-08 Eugen Reisz Kohlenkoernermikrophon

Also Published As

Publication number Publication date
DE872533C (de) 1953-04-02

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