FR1133761A - Electro-acoustic transformer - Google Patents

Electro-acoustic transformer

Info

Publication number
FR1133761A
FR1133761A FR1133761DA FR1133761A FR 1133761 A FR1133761 A FR 1133761A FR 1133761D A FR1133761D A FR 1133761DA FR 1133761 A FR1133761 A FR 1133761A
Authority
FR
France
Prior art keywords
electro
acoustic transformer
acoustic
transformer
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
Max Baermann
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 FR1133761A publication Critical patent/FR1133761A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR1133761D 1954-10-28 1955-10-26 Electro-acoustic transformer Expired FR1133761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB33182A DE1038115B (en) 1954-10-28 1954-10-28 Electroacoustic converter

Publications (1)

Publication Number Publication Date
FR1133761A true FR1133761A (en) 1957-04-02

Family

ID=6963950

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1133761D Expired FR1133761A (en) 1954-10-28 1955-10-26 Electro-acoustic transformer

Country Status (4)

Country Link
DE (1) DE1038115B (en)
FR (1) FR1133761A (en)
GB (1) GB803283A (en)
NL (1) NL104049C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1157656B (en) * 1959-01-28 1963-11-21 Philips Nv Electrodynamic converter
US5062140A (en) * 1988-04-27 1991-10-29 Sony Corporation Induction speaker
DE4037648A1 (en) * 1990-11-27 1991-07-11 Kraemer Martin Dipl Ing Electrodynamic loudspeaker with no movable connections - conveys signals between transformer and external circuitry under principle of magnetic induction
CN108632700B (en) * 2017-03-17 2024-05-14 宁波升亚电子有限公司 Headset earphone

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1732644A (en) * 1928-07-09 1929-10-22 farrand
US2492255A (en) * 1944-12-26 1949-12-27 John O Angehrn Sealed-coil type vibratory magnet loudspeaker

Also Published As

Publication number Publication date
DE1038115B (en) 1958-09-04
NL104049C (en)
GB803283A (en) 1958-10-22

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