CH269350A - Microphone with carbon electrodes. - Google Patents

Microphone with carbon electrodes.

Info

Publication number
CH269350A
CH269350A CH269350DA CH269350A CH 269350 A CH269350 A CH 269350A CH 269350D A CH269350D A CH 269350DA CH 269350 A CH269350 A CH 269350A
Authority
CH
Switzerland
Prior art keywords
microphone
carbon electrodes
electrodes
carbon
Prior art date
Application number
Other languages
German (de)
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 CH269350A publication Critical patent/CH269350A/en

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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones
    • 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
CH269350D 1947-08-06 1947-08-06 Microphone with carbon electrodes. CH269350A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2572525X 1947-08-06

Publications (1)

Publication Number Publication Date
CH269350A true CH269350A (en) 1950-06-30

Family

ID=4570209

Family Applications (1)

Application Number Title Priority Date Filing Date
CH269350D CH269350A (en) 1947-08-06 1947-08-06 Microphone with carbon electrodes.

Country Status (6)

Country Link
US (1) US2572525A (en)
BE (1) BE484178A (en)
CH (1) CH269350A (en)
DE (1) DE874019C (en)
FR (1) FR969788A (en)
NL (1) NL70171C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE954967C (en) * 1952-11-01 1956-12-27 Standard Elek K Ag Carbon microphone with a movable and a fixed electrode, which is divided into several partial electrodes
DE1234267B (en) * 1964-04-04 1967-02-16 Telefonbau Carbon microphone

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US557588A (en) * 1896-04-07 Telephony
US563395A (en) * 1896-07-07 Telephone-transmitter
US778409A (en) * 1903-04-20 1904-12-27 Oscar M Frykman Telephone apparatus.
US1117231A (en) * 1911-11-13 1914-11-17 Western Electric Co Loud-speaking transmitter.
US2179733A (en) * 1934-11-27 1939-11-14 Siemens Brothers & Co Ltd Microphone
US2149628A (en) * 1935-09-16 1939-03-07 Associated Electric Lab Inc Telephone transmitter
US2140859A (en) * 1936-12-14 1938-12-20 Siemens Ag Telephone transmitter
GB513160A (en) * 1938-03-01 1939-10-05 Donald Mcmillan Improvements in or relating to microphones
US2435920A (en) * 1943-09-20 1948-02-10 Electro Voice Mfg Co Inc Balanced granular microphone

Also Published As

Publication number Publication date
BE484178A (en)
FR969788A (en) 1950-12-26
DE874019C (en) 1953-04-20
NL70171C (en)
US2572525A (en) 1951-10-23

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