FR2271732B1 - - Google Patents

Info

Publication number
FR2271732B1
FR2271732B1 FR7417168A FR7417168A FR2271732B1 FR 2271732 B1 FR2271732 B1 FR 2271732B1 FR 7417168 A FR7417168 A FR 7417168A FR 7417168 A FR7417168 A FR 7417168A FR 2271732 B1 FR2271732 B1 FR 2271732B1
Authority
FR
France
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
FR7417168A
Other languages
French (fr)
Other versions
FR2271732A1 (en
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 FR7417168A priority Critical patent/FR2271732A1/fr
Publication of FR2271732A1 publication Critical patent/FR2271732A1/fr
Application granted granted Critical
Publication of FR2271732B1 publication Critical patent/FR2271732B1/fr
Granted 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
    • H04R9/025—Magnetic circuit

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR7417168A 1974-05-14 1974-05-14 Tripolar moving coil in loudspeaker assembly - has coil in annular space between permanent magnet and ferromagnetic ring Granted FR2271732A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7417168A FR2271732A1 (en) 1974-05-14 1974-05-14 Tripolar moving coil in loudspeaker assembly - has coil in annular space between permanent magnet and ferromagnetic ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7417168A FR2271732A1 (en) 1974-05-14 1974-05-14 Tripolar moving coil in loudspeaker assembly - has coil in annular space between permanent magnet and ferromagnetic ring

Publications (2)

Publication Number Publication Date
FR2271732A1 FR2271732A1 (en) 1975-12-12
FR2271732B1 true FR2271732B1 (esLanguage) 1976-12-24

Family

ID=9138983

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7417168A Granted FR2271732A1 (en) 1974-05-14 1974-05-14 Tripolar moving coil in loudspeaker assembly - has coil in annular space between permanent magnet and ferromagnetic ring

Country Status (1)

Country Link
FR (1) FR2271732A1 (esLanguage)

Also Published As

Publication number Publication date
FR2271732A1 (en) 1975-12-12

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Legal Events

Date Code Title Description
ST Notification of lapse