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JPS5885872

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DESCRIPTION JPS5885872
[0001]
Brief description of the drawings
[0002]
1a and 1b are sectional views showing the conventional MFB type speaker, FIG. 2 is an electric
circuit diagram of the conventional MFB type speaker, FIG. 3 is a sectional view showing one
embodiment of the present invention, and FIG. 3a and 3b are enlarged sectional views showing
the embodiment of a part of FIG. 3, FIG. 5 is an enlarged sectional view of a part of FIGS. 4a and
4b, and FIG. FIG. 7 is a circuit diagram showing the effect of the electric circuit of FIG. 6, and FIG.
8 is an equivalent circuit diagram for explaining the characteristics of the circuit of FIG. 20 ... coil
bobbin, 21 ... voice coil (drive coil), 22 ... detection coil, 21 ', 21 "... recess.
13-05-2019
1
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