FR2416609A1 - Electroacoustic transducer for generating and detecting vibrations - has spiral conductor on diaphragm between pole pieces of magnet or solenoid - Google Patents

Electroacoustic transducer for generating and detecting vibrations - has spiral conductor on diaphragm between pole pieces of magnet or solenoid

Info

Publication number
FR2416609A1
FR2416609A1 FR7802589A FR7802589A FR2416609A1 FR 2416609 A1 FR2416609 A1 FR 2416609A1 FR 7802589 A FR7802589 A FR 7802589A FR 7802589 A FR7802589 A FR 7802589A FR 2416609 A1 FR2416609 A1 FR 2416609A1
Authority
FR
France
Prior art keywords
diaphragm
pole pieces
conductors
magnet
solenoid
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Withdrawn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
FR7802589A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7802589A priority Critical patent/FR2416609A1/en
Publication of FR2416609A1 publication Critical patent/FR2416609A1/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Withdrawn legal-status Critical Current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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane

Abstract

The apparatus for genrating or detecting sound or ultrasonic waves or mechanical vibrations, comprises one or more spiral copper conductors. The conductors are supported on an annular syntethic material diaphragm which is supported at its inner and outer edges by respective pole pieces (2, 3) of a permanent magnet or electromagnet (1). The magnetic lines of force lie in the plane of the diaphragm at right angles to the conductors, and thus the resulting Laplace force is perpendicular to the diaphragm over its whole area. The conductors have two terminals.
FR7802589A 1978-01-31 1978-01-31 Electroacoustic transducer for generating and detecting vibrations - has spiral conductor on diaphragm between pole pieces of magnet or solenoid Withdrawn FR2416609A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7802589A FR2416609A1 (en) 1978-01-31 1978-01-31 Electroacoustic transducer for generating and detecting vibrations - has spiral conductor on diaphragm between pole pieces of magnet or solenoid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7802589A FR2416609A1 (en) 1978-01-31 1978-01-31 Electroacoustic transducer for generating and detecting vibrations - has spiral conductor on diaphragm between pole pieces of magnet or solenoid

Publications (1)

Publication Number Publication Date
FR2416609A1 true FR2416609A1 (en) 1979-08-31

Family

ID=9203991

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7802589A Withdrawn FR2416609A1 (en) 1978-01-31 1978-01-31 Electroacoustic transducer for generating and detecting vibrations - has spiral conductor on diaphragm between pole pieces of magnet or solenoid

Country Status (1)

Country Link
FR (1) FR2416609A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2488765A1 (en) * 1980-08-13 1982-02-19 Telephonie Ind Commerciale Electrodynamic transducer usable as loudspeaker or microphone - has coil formed as printed circuit group of spirals on both faces of membrane above alternating concentric magnetic poles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2488765A1 (en) * 1980-08-13 1982-02-19 Telephonie Ind Commerciale Electrodynamic transducer usable as loudspeaker or microphone - has coil formed as printed circuit group of spirals on both faces of membrane above alternating concentric magnetic poles

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Legal Events

Date Code Title Description
ST Notification of lapse