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JPS5978799

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DESCRIPTION JPS5978799
[0001]
Brief description of the drawings
[0002]
FIG. 1 is a cross-sectional view of a conventional ultrasonic ceramic microphone, FIG. 2 is a crosssectional view of the ultrasonic ceramic microphone of the present invention-embodiment, and
FIG. FIG. 4 is a waveform diagram showing the pulse response of the embodiment of the present
invention and the prior art. DESCRIPTION OF SYMBOLS 1: .. Bimorph vibrator ¦ oscillator 2 ...
Piezoelectric porcelain vibrator 3 ... Metal-made diaphragm, 4 ... conical-shaped resonator, 12 ...
net ¦ network.
04-05-2019
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