FR2419642A1 - Multielement piezoelectric loudspeaker - utilises membrane comprising number of small low inertia membranes with parallelly coupled transformer - Google Patents

Multielement piezoelectric loudspeaker - utilises membrane comprising number of small low inertia membranes with parallelly coupled transformer

Info

Publication number
FR2419642A1
FR2419642A1 FR7807395A FR7807395A FR2419642A1 FR 2419642 A1 FR2419642 A1 FR 2419642A1 FR 7807395 A FR7807395 A FR 7807395A FR 7807395 A FR7807395 A FR 7807395A FR 2419642 A1 FR2419642 A1 FR 2419642A1
Authority
FR
France
Prior art keywords
membrane
low inertia
utilises
membranes
small low
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.)
Withdrawn
Application number
FR7807395A
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.)
CHAUVEAU DIDIER
Original Assignee
CHAUVEAU DIDIER
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 CHAUVEAU DIDIER filed Critical CHAUVEAU DIDIER
Priority to FR7807395A priority Critical patent/FR2419642A1/en
Publication of FR2419642A1 publication Critical patent/FR2419642A1/en
Withdrawn legal-status Critical Current

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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Abstract

The small piezoelectric elements are used to form high quality sound reproduction system. The membrane is made of small sections each with low inertia. A perforated support panel (1) has a number of ceramic piezoelectric elements (3) glued to it by hard rubber (4). The elements are also glued to individual membrane sections (2) of large panel. The membrane is constructed of inert material and is light weight. The piezoelectric elements are connected (7) in parallel to high quality transformer matching high impedance of reproduction system to output of current amplifier.
FR7807395A 1978-03-09 1978-03-09 Multielement piezoelectric loudspeaker - utilises membrane comprising number of small low inertia membranes with parallelly coupled transformer Withdrawn FR2419642A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7807395A FR2419642A1 (en) 1978-03-09 1978-03-09 Multielement piezoelectric loudspeaker - utilises membrane comprising number of small low inertia membranes with parallelly coupled transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7807395A FR2419642A1 (en) 1978-03-09 1978-03-09 Multielement piezoelectric loudspeaker - utilises membrane comprising number of small low inertia membranes with parallelly coupled transformer

Publications (1)

Publication Number Publication Date
FR2419642A1 true FR2419642A1 (en) 1979-10-05

Family

ID=9205796

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7807395A Withdrawn FR2419642A1 (en) 1978-03-09 1978-03-09 Multielement piezoelectric loudspeaker - utilises membrane comprising number of small low inertia membranes with parallelly coupled transformer

Country Status (1)

Country Link
FR (1) FR2419642A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989004582A1 (en) * 1987-11-11 1989-05-18 Reinhardt Fischer Electro-acoustic transducer
WO1992002795A3 (en) * 1990-08-04 1992-08-06 Bosch Gmbh Robert Ultrasonic transducer
WO2000002415A1 (en) * 1998-07-01 2000-01-13 Alusuisse Kapa Gmbh Loudspeaker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989004582A1 (en) * 1987-11-11 1989-05-18 Reinhardt Fischer Electro-acoustic transducer
WO1992002795A3 (en) * 1990-08-04 1992-08-06 Bosch Gmbh Robert Ultrasonic transducer
US5446332A (en) * 1990-08-04 1995-08-29 Robert Bosch Gmbh Ultrasonic transducer
WO2000002415A1 (en) * 1998-07-01 2000-01-13 Alusuisse Kapa Gmbh Loudspeaker

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Legal Events

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