JPS51119216A - Portable small speaker - Google Patents

Portable small speaker

Info

Publication number
JPS51119216A
JPS51119216A JP4408075A JP4408075A JPS51119216A JP S51119216 A JPS51119216 A JP S51119216A JP 4408075 A JP4408075 A JP 4408075A JP 4408075 A JP4408075 A JP 4408075A JP S51119216 A JPS51119216 A JP S51119216A
Authority
JP
Japan
Prior art keywords
portable small
small speaker
speaker
power consumption
low power
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.)
Pending
Application number
JP4408075A
Other languages
Japanese (ja)
Inventor
Akira Nikaido
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP4408075A priority Critical patent/JPS51119216A/en
Publication of JPS51119216A publication Critical patent/JPS51119216A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

PURPOSE:Enhanced conversion efficiency, low power consumption, easy machining and reduced size.
JP4408075A 1975-04-11 1975-04-11 Portable small speaker Pending JPS51119216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4408075A JPS51119216A (en) 1975-04-11 1975-04-11 Portable small speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4408075A JPS51119216A (en) 1975-04-11 1975-04-11 Portable small speaker

Publications (1)

Publication Number Publication Date
JPS51119216A true JPS51119216A (en) 1976-10-19

Family

ID=12681631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4408075A Pending JPS51119216A (en) 1975-04-11 1975-04-11 Portable small speaker

Country Status (1)

Country Link
JP (1) JPS51119216A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009144773A1 (en) * 2008-05-28 2009-12-03 三菱電機エンジニアリング株式会社 Electromagnetic convertor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009144773A1 (en) * 2008-05-28 2009-12-03 三菱電機エンジニアリング株式会社 Electromagnetic convertor
JP2011171781A (en) * 2008-05-28 2011-09-01 Mitsubishi Electric Engineering Co Ltd Electromagnetic converter

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