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JPS6090499

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DESCRIPTION JPS6090499
[0001]
Brief description of the drawings
[0002]
1 is a schematic longitudinal sectional view of an example of a conventional piezoelectric buzzer,
FIG. 2 is a drive circuit diagram of the piezoelectric buzzer, FIG. 3 is a schematic plan view of a
first embodiment of the present invention, and FIG. 3 is a schematic longitudinal sectional view
taken along line segment XOX, FIG. 5 is a schematic plan view of a second embodiment of the
present invention, and FIG. 6 is a schematic longitudinal sectional view taken along line segment
YOY in FIG. is there. 1: Electro-acoustic transducer, IA: Piezoelectric ceramic plate, 1 B: Metal
diaphragm, IC: Main electrode, ID: Feedback electrode, IE: Lower electrode, 2. .. Transistor, 3B:
first resistance, 3E: second resistance.
04-05-2019
1
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