FR719982A - mobile equipment for electrodynamic devices intended to transform electrical oscillations into sound vibrations or vice versa - Google Patents

mobile equipment for electrodynamic devices intended to transform electrical oscillations into sound vibrations or vice versa

Info

Publication number
FR719982A
FR719982A FR719982DA FR719982A FR 719982 A FR719982 A FR 719982A FR 719982D A FR719982D A FR 719982DA FR 719982 A FR719982 A FR 719982A
Authority
FR
France
Prior art keywords
vice versa
mobile equipment
devices intended
sound vibrations
electrical oscillations
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 FR719982A publication Critical patent/FR719982A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR719982D 1930-07-24 1931-07-11 mobile equipment for electrodynamic devices intended to transform electrical oscillations into sound vibrations or vice versa Expired FR719982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL719982X 1930-07-24

Publications (1)

Publication Number Publication Date
FR719982A true FR719982A (en) 1932-02-13

Family

ID=19815072

Family Applications (1)

Application Number Title Priority Date Filing Date
FR719982D Expired FR719982A (en) 1930-07-24 1931-07-11 mobile equipment for electrodynamic devices intended to transform electrical oscillations into sound vibrations or vice versa

Country Status (1)

Country Link
FR (1) FR719982A (en)

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