FR817318A - Permanent magnet for acoustic transformation devices - Google Patents

Permanent magnet for acoustic transformation devices

Info

Publication number
FR817318A
FR817318A FR817318DA FR817318A FR 817318 A FR817318 A FR 817318A FR 817318D A FR817318D A FR 817318DA FR 817318 A FR817318 A FR 817318A
Authority
FR
France
Prior art keywords
permanent magnet
transformation devices
acoustic transformation
acoustic
devices
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)
Inventor
Erich Hausdorf
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 filed Critical
Application granted granted Critical
Publication of FR817318A publication Critical patent/FR817318A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
FR817318D 1936-02-04 1937-02-03 Permanent magnet for acoustic transformation devices Expired FR817318A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE490010X 1936-02-04

Publications (1)

Publication Number Publication Date
FR817318A true FR817318A (en) 1937-09-01

Family

ID=6544046

Family Applications (1)

Application Number Title Priority Date Filing Date
FR817318D Expired FR817318A (en) 1936-02-04 1937-02-03 Permanent magnet for acoustic transformation devices

Country Status (2)

Country Link
FR (1) FR817318A (en)
GB (1) GB490010A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE759856C (en) * 1939-10-05 1954-01-18 Aeg Permanent magnet for loudspeakers, measuring devices, etc. like

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546344A (en) * 1946-12-31 1951-03-27 Univ Loudspeakers Inc Magnet structure
US2957053A (en) * 1956-02-21 1960-10-18 Gen Phones Corp Audio-electric translating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE759856C (en) * 1939-10-05 1954-01-18 Aeg Permanent magnet for loudspeakers, measuring devices, etc. like

Also Published As

Publication number Publication date
GB490010A (en) 1938-08-04

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