FR1354631A - Electroacoustic transducer - Google Patents

Electroacoustic transducer

Info

Publication number
FR1354631A
FR1354631A FR932278A FR932278A FR1354631A FR 1354631 A FR1354631 A FR 1354631A FR 932278 A FR932278 A FR 932278A FR 932278 A FR932278 A FR 932278A FR 1354631 A FR1354631 A FR 1354631A
Authority
FR
France
Prior art keywords
electroacoustic transducer
electroacoustic
transducer
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
FR932278A
Other languages
French (fr)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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
Priority claimed from US196670A external-priority patent/US3118022A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to FR932278A priority Critical patent/FR1354631A/en
Application granted granted Critical
Publication of FR1354631A publication Critical patent/FR1354631A/en
Expired legal-status Critical Current

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
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/025—Electrets, i.e. having a permanently-polarised dielectric having an inorganic dielectric
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
FR932278A 1962-05-22 1963-04-22 Electroacoustic transducer Expired FR1354631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR932278A FR1354631A (en) 1962-05-22 1963-04-22 Electroacoustic transducer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US196670A US3118022A (en) 1961-08-07 1962-05-22 Electroacoustic transducer
FR932278A FR1354631A (en) 1962-05-22 1963-04-22 Electroacoustic transducer

Publications (1)

Publication Number Publication Date
FR1354631A true FR1354631A (en) 1964-03-06

Family

ID=26200909

Family Applications (1)

Application Number Title Priority Date Filing Date
FR932278A Expired FR1354631A (en) 1962-05-22 1963-04-22 Electroacoustic transducer

Country Status (1)

Country Link
FR (1) FR1354631A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2162194A1 (en) * 1971-12-02 1973-07-13 Ericsson Telefon Ab L M
FR2186799A1 (en) * 1971-03-11 1974-01-11 Matsushita Electric Ind Co Ltd
FR2423945A1 (en) * 1978-03-31 1979-11-16 Guisto Marc Electrostatic transducer having membranes of metallised plastics film - for durable ultrasonic or transmission equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2186799A1 (en) * 1971-03-11 1974-01-11 Matsushita Electric Ind Co Ltd
FR2162194A1 (en) * 1971-12-02 1973-07-13 Ericsson Telefon Ab L M
FR2423945A1 (en) * 1978-03-31 1979-11-16 Guisto Marc Electrostatic transducer having membranes of metallised plastics film - for durable ultrasonic or transmission equipment

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