FR1134412A - Electro-dynamic loudspeaker with incorporated matching transformer - Google Patents

Electro-dynamic loudspeaker with incorporated matching transformer

Info

Publication number
FR1134412A
FR1134412A FR1134412DA FR1134412A FR 1134412 A FR1134412 A FR 1134412A FR 1134412D A FR1134412D A FR 1134412DA FR 1134412 A FR1134412 A FR 1134412A
Authority
FR
France
Prior art keywords
electro
incorporated
matching transformer
dynamic loudspeaker
loudspeaker
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 FR1134412A publication Critical patent/FR1134412A/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
    • H04R9/06—Loudspeakers
    • 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
    • H04R9/025—Magnetic circuit

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR1134412D 1954-05-31 1955-05-27 Electro-dynamic loudspeaker with incorporated matching transformer Expired FR1134412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1134412X 1954-05-31

Publications (1)

Publication Number Publication Date
FR1134412A true FR1134412A (en) 1957-04-11

Family

ID=19869989

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1134412D Expired FR1134412A (en) 1954-05-31 1955-05-27 Electro-dynamic loudspeaker with incorporated matching transformer

Country Status (1)

Country Link
FR (1) FR1134412A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1177210B (en) * 1962-12-14 1964-09-03 Lehner Fernsprech Signal Electroacoustic converter for telephone purposes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1177210B (en) * 1962-12-14 1964-09-03 Lehner Fernsprech Signal Electroacoustic converter for telephone purposes

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