FR715482A - Electrodynamic device intended to transform electrical oscillations into sound vibrations and vice versa - Google Patents

Electrodynamic device intended to transform electrical oscillations into sound vibrations and vice versa

Info

Publication number
FR715482A
FR715482A FR715482DA FR715482A FR 715482 A FR715482 A FR 715482A FR 715482D A FR715482D A FR 715482DA FR 715482 A FR715482 A FR 715482A
Authority
FR
France
Prior art keywords
vice versa
device intended
sound vibrations
electrical oscillations
transform electrical
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
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR715482A publication Critical patent/FR715482A/en
Expired 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
FR715482D 1930-05-10 1931-04-15 Electrodynamic device intended to transform electrical oscillations into sound vibrations and vice versa Expired FR715482A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL387309X 1930-05-10

Publications (1)

Publication Number Publication Date
FR715482A true FR715482A (en) 1931-12-03

Family

ID=19785725

Family Applications (1)

Application Number Title Priority Date Filing Date
FR715482D Expired FR715482A (en) 1930-05-10 1931-04-15 Electrodynamic device intended to transform electrical oscillations into sound vibrations and vice versa

Country Status (3)

Country Link
BE (1) BE379048A (en)
FR (1) FR715482A (en)
GB (1) GB387309A (en)

Also Published As

Publication number Publication date
BE379048A (en)
GB387309A (en) 1933-02-02

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