JPS5728563A - Electromagnetic driving system and electromagnetic generating system - Google Patents

Electromagnetic driving system and electromagnetic generating system

Info

Publication number
JPS5728563A
JPS5728563A JP10169080A JP10169080A JPS5728563A JP S5728563 A JPS5728563 A JP S5728563A JP 10169080 A JP10169080 A JP 10169080A JP 10169080 A JP10169080 A JP 10169080A JP S5728563 A JPS5728563 A JP S5728563A
Authority
JP
Japan
Prior art keywords
magnetic field
grooves
electromagnetic
generated
current
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
JP10169080A
Other languages
Japanese (ja)
Inventor
Koji Sakai
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 JP10169080A priority Critical patent/JPS5728563A/en
Publication of JPS5728563A publication Critical patent/JPS5728563A/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; 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

Abstract

PURPOSE:To reduce the distortion of output of a speaker by a method wherein grooves are provided along the face being adjacent to the gap between facing magnetic poles, and coils to make a current to flow therein in the direction to negate line of magnetic field generated by a moving coil are buried in the grooves. CONSTITUTION:The grooves 13 are provided along the face of the central magnetic pole 1 being adjacent to the gap 3, the current is made to flow in the compensating coils 11 being put in the grooves 13 in the direction as to generate opposite directional magnetic field to the direction of crossing magnetic field 10 to be generated when a current flow in the moving coil 8 to suppress generation of crossing magnetic field 10. Accordingly distortion of output to be generated by a disturbance owing to crossing magnetic field can be reduced.
JP10169080A 1980-07-23 1980-07-23 Electromagnetic driving system and electromagnetic generating system Pending JPS5728563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10169080A JPS5728563A (en) 1980-07-23 1980-07-23 Electromagnetic driving system and electromagnetic generating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10169080A JPS5728563A (en) 1980-07-23 1980-07-23 Electromagnetic driving system and electromagnetic generating system

Publications (1)

Publication Number Publication Date
JPS5728563A true JPS5728563A (en) 1982-02-16

Family

ID=14307329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10169080A Pending JPS5728563A (en) 1980-07-23 1980-07-23 Electromagnetic driving system and electromagnetic generating system

Country Status (1)

Country Link
JP (1) JPS5728563A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2836000A1 (en) * 2002-02-13 2003-08-15 Harman Internat ELECTRODYNAMIC MOTOR WITH MOBILE COIL, PARTICULARLY FOR SPEAKER, SPEAKER AND ADAPTED POLAR PART
FR2883122A1 (en) * 2005-03-11 2006-09-15 Welcohm Technology Sarl Loudspeaker, has driver with magnetic circuit that interacts with moving coil and comprises upper and lower compensation coils coaxial to moving coil and symmetrically positioned on core on both sides of air gap
CN103248191A (en) * 2013-05-14 2013-08-14 上海电机学院 Acoustic generator with elastic position correction function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2836000A1 (en) * 2002-02-13 2003-08-15 Harman Internat ELECTRODYNAMIC MOTOR WITH MOBILE COIL, PARTICULARLY FOR SPEAKER, SPEAKER AND ADAPTED POLAR PART
WO2003069953A1 (en) * 2002-02-13 2003-08-21 Harman International Moving-coil electrodynamic motor particularly for a loudspeaker, loudspeaker and corresponding pole piece
US7283642B2 (en) 2002-02-13 2007-10-16 Harman International Industries, Incorporated Moving-coil electrodynamic motor for a loudspeaker, loudspeaker and pole piece
FR2883122A1 (en) * 2005-03-11 2006-09-15 Welcohm Technology Sarl Loudspeaker, has driver with magnetic circuit that interacts with moving coil and comprises upper and lower compensation coils coaxial to moving coil and symmetrically positioned on core on both sides of air gap
CN103248191A (en) * 2013-05-14 2013-08-14 上海电机学院 Acoustic generator with elastic position correction function

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