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JPS58100000

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DESCRIPTION JPS58100000
[0001]
Brief description of the drawings
[0002]
Fig. 1 shows a side sectional view and a rear view of an embodiment according to the present
invention, and Fig. 2 shows a side sectional view and a front view of a modification according to
the present invention, FIG. 3 is a diagram of a conventional speaker-driven voice amplification
circuit, and FIG. 4 is a diagram of a voice amplification circuit according to an embodiment of the
present invention. 1.11 ・ ・ ・ case 5, 14 ... case vibration body, 8 ° 16 ... bimorph oscillator.
11-05-2019
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