Title:
VOICE COIL DEVICE
Document Type and Number:
Japanese Patent JPS57106368
Kind Code:
A
Abstract:
PURPOSE:To obtain a voice coil having high responsiveness with high power by constructing the voice coil of a plurality of conductors connected in parallel with each other. CONSTITUTION:A voice coil 8 is formed of a plurality of coils 8a, 8b connected in parallel with each other. When the number of turns of the coils 8a, 8b is assumed to be N/2 to compare this with a single coil of number N of turns, the time constant of the coil can be improved to 1/4. Accordingly, by providing the voice coil formed of a plurality of parallel coils, the abrupt increase of the inductance proportional to the increase in the number of turns of the entire coil can be avoided, thereby obtaining a voice coil device of high responsiveness with high power.
Inventors:
FUJIOKA MASAHIKO
Application Number:
JP18022180A
Publication Date:
July 02, 1982
Filing Date:
December 19, 1980
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
H02K33/18; G11B21/02; H02K41/035; (IPC1-7): G11B21/08; H02K33/18