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ES424660A1 - Electro-acoustic transducers - Google Patents

Electro-acoustic transducers

Info

Publication number
ES424660A1
ES424660A1 ES424660A ES424660A ES424660A1 ES 424660 A1 ES424660 A1 ES 424660A1 ES 424660 A ES424660 A ES 424660A ES 424660 A ES424660 A ES 424660A ES 424660 A1 ES424660 A1 ES 424660A1
Authority
ES
Spain
Prior art keywords
yoke
electro
gap
prevents
magnetic
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
ES424660A
Other languages
Spanish (es)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES424660A1 publication Critical patent/ES424660A1/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

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)

Abstract

An electro-acoustic transducer for use in telephones having a U-shaped magnetic conducting yoke with an electromagnetic coil around one leg of the yoke. A substantially flat armature connected at one end to the diaphragm by means of a drive rod is pivotably mounted on a permanent magnet located intermediate the legs of the yoke. A strip of non-magnetic compliant material interposed in the gap between the armature and the opposing yoke ends defines the thickness of the gap, prevents magnetic leakage therethrough and prevents the ingress of foreign particles into the polar gaps.
ES424660A 1973-03-27 1974-03-26 Electro-acoustic transducers Expired ES424660A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1454573A GB1385161A (en) 1973-03-27 1973-03-27 Electro-acoustic transducers

Publications (1)

Publication Number Publication Date
ES424660A1 true ES424660A1 (en) 1976-10-16

Family

ID=10043157

Family Applications (1)

Application Number Title Priority Date Filing Date
ES424660A Expired ES424660A1 (en) 1973-03-27 1974-03-26 Electro-acoustic transducers

Country Status (7)

Country Link
US (1) US3919500A (en)
AU (1) AU6687974A (en)
BR (1) BR7402241D0 (en)
ES (1) ES424660A1 (en)
GB (1) GB1385161A (en)
IT (1) IT1009707B (en)
ZA (1) ZA74410B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201234336Y (en) 2008-07-18 2009-05-06 比亚迪股份有限公司 Receiver unit
JP2012501609A (en) * 2008-08-29 2012-01-19 ザ・ペン・ステイト・リサーチ・ファウンデイション Method and apparatus for reducing distortion of a balanced armature device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1671105A (en) * 1927-06-23 1928-05-29 Farrand Mfg Co Inc Actuating device for loud speakers
US2276951A (en) * 1939-02-25 1942-03-17 Standard Oil Dev Co Chlorinated polyisobutylene and process of making the same
US2588327A (en) * 1948-01-31 1952-03-04 Dictaphone Corp Recorder head
US3111496A (en) * 1960-11-14 1963-11-19 Us Rubber Co High temperature blowing of rubber and plastics with alkali metal azodicarboxylate
US3334195A (en) * 1964-06-25 1967-08-01 Artnell Company Magnetic speaker construction

Also Published As

Publication number Publication date
GB1385161A (en) 1975-02-26
US3919500A (en) 1975-11-11
ZA74410B (en) 1974-11-27
BR7402241D0 (en) 1974-11-19
AU6687974A (en) 1975-09-25
IT1009707B (en) 1976-12-20

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