CA1107382A - Microphone a electret a raccords electriques simplifies sur plaquette de circuit imprime - Google Patents

Microphone a electret a raccords electriques simplifies sur plaquette de circuit imprime

Info

Publication number
CA1107382A
CA1107382A CA315,771A CA315771A CA1107382A CA 1107382 A CA1107382 A CA 1107382A CA 315771 A CA315771 A CA 315771A CA 1107382 A CA1107382 A CA 1107382A
Authority
CA
Canada
Prior art keywords
electret
conducting
circuit board
assembly
terminals
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
CA315,771A
Other languages
English (en)
Inventor
Beverley W. Gumb
Ronald J. Morrell
Bruce I. Dolan
Algirdas J. Dragunevicius
Jacek J. Wojcik
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to CA315,771A priority Critical patent/CA1107382A/fr
Priority to EP79103982A priority patent/EP0012176A1/fr
Priority to BR7907133A priority patent/BR7907133A/pt
Priority to ES485653A priority patent/ES485653A1/es
Priority to JP14138379A priority patent/JPS5566199A/ja
Application granted granted Critical
Publication of CA1107382A publication Critical patent/CA1107382A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
CA315,771A 1978-11-03 1978-11-03 Microphone a electret a raccords electriques simplifies sur plaquette de circuit imprime Expired CA1107382A (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA315,771A CA1107382A (fr) 1978-11-03 1978-11-03 Microphone a electret a raccords electriques simplifies sur plaquette de circuit imprime
EP79103982A EP0012176A1 (fr) 1978-11-03 1979-10-16 Microphone à électret
BR7907133A BR7907133A (pt) 1978-11-03 1979-11-01 Conjunto de eletreto e transmissor telefonico respectivo
ES485653A ES485653A1 (es) 1978-11-03 1979-11-02 Perfeccionamientos en conjuntos de capsulas microfonicas de electreto para telefono
JP14138379A JPS5566199A (en) 1978-11-03 1979-11-02 Electret microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA315,771A CA1107382A (fr) 1978-11-03 1978-11-03 Microphone a electret a raccords electriques simplifies sur plaquette de circuit imprime

Publications (1)

Publication Number Publication Date
CA1107382A true CA1107382A (fr) 1981-08-18

Family

ID=4112877

Family Applications (1)

Application Number Title Priority Date Filing Date
CA315,771A Expired CA1107382A (fr) 1978-11-03 1978-11-03 Microphone a electret a raccords electriques simplifies sur plaquette de circuit imprime

Country Status (5)

Country Link
EP (1) EP0012176A1 (fr)
JP (1) JPS5566199A (fr)
BR (1) BR7907133A (fr)
CA (1) CA1107382A (fr)
ES (1) ES485653A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6804363B2 (en) 2002-04-11 2004-10-12 Rion Co., Ltd. Electroacoustic transducer
US6842964B1 (en) 2000-09-29 2005-01-18 Tucker Davis Technologies, Inc. Process of manufacturing of electrostatic speakers

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE428081B (sv) * 1981-10-07 1983-05-30 Ericsson Telefon Ab L M Tilledningsram for en elektretmikrofon
US4492825A (en) * 1982-07-28 1985-01-08 At&T Bell Laboratories Electroacoustic transducer
SE438233B (sv) * 1983-08-19 1985-04-01 Ericsson Telefon Ab L M Elektretmikrofon
DK62484D0 (da) * 1984-02-13 1984-02-13 Gnt Automatic As Kombineret transducerenhed til mikrotelefon
GB2231235B (en) * 1989-05-05 1993-11-10 Transfer Technology Ltd Electroacoustical transducer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1252258C2 (de) * 1965-04-13 1974-06-20 Nach dem elektrostatischen prinzip arbeitender elektroakustischer wandler und verfahren zu seiner herstellung
GB1268654A (en) * 1969-08-12 1972-03-29 Plessey Co Ltd Electroacoustic transducers
US3663768A (en) * 1971-01-15 1972-05-16 Northern Electric Co Electret transducer
JPS4861126A (fr) * 1971-12-02 1973-08-27
DE2257680A1 (de) * 1971-12-11 1973-06-14 Primo Co Ltd Manufacturers & M Kompaktmikrophon
FR2220952A1 (fr) * 1973-03-07 1974-10-04 Arvin Ind Inc
JPS5419172B2 (fr) * 1973-07-23 1979-07-13
CH583489A5 (en) * 1975-01-07 1976-12-31 Gfeller Ag Apparate Fabrik Fla Microphone capsule for telephone - has preamplifier filter and main amplifier coupled to electret microphone
NL7802688A (nl) * 1978-03-13 1979-09-17 Philips Nv Inrichting voor het omzetten van akoestische in elektrische trillingen en omgekeerd, voor- zien van tenminste een kondensator elektreet- element aangesloten op een elektronische schakeling.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6842964B1 (en) 2000-09-29 2005-01-18 Tucker Davis Technologies, Inc. Process of manufacturing of electrostatic speakers
US6804363B2 (en) 2002-04-11 2004-10-12 Rion Co., Ltd. Electroacoustic transducer

Also Published As

Publication number Publication date
JPS5566199A (en) 1980-05-19
ES485653A1 (es) 1980-05-16
EP0012176A1 (fr) 1980-06-25
BR7907133A (pt) 1980-07-22

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Legal Events

Date Code Title Description
MKEX Expiry