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JPS5885887

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DESCRIPTION JPS5885887
[0001]
Brief description of the drawings
[0002]
1 and 2 are front and side views showing a first example of a conventional piezoelectric vibrator,
FIGS. 3 and 4 are front and side views showing a second example, and FIG. 5 is FIG. FIG. 6 and
FIG. 7 are a plan view and a longitudinal sectional view showing an example of a piezoelectric
vibrator according to the present invention, FIG. 8 is a connection diagram showing its drive
control circuit, and FIG. 10 and 11 are plan views and front views showing another embodiment
of a piezoelectric vibrator according to the present invention, and FIG. 12 shows another
modification. FIG. 13 is a circuit diagram, and FIG. 13 is a curve diagram for explaining another
modification. DESCRIPTION OF SYMBOLS 1 ... Piezoelectric vibrator, 2 ... Drive element, 3.4 ..
Drive electrode, 5 ... Detection element, 6 ... Detection electrode, 8 ... Resistance for detection, 15
... · Piezoelectric vibrator, 16 · · · Piezoelectric element, 17. 18 · · · Drive electrode, 19 · · · · · · · · · ·
20 detection electrode, 21 · · · drive control circuit, 25 · · · · · low pass filter 26: phase shift circuit
27: amplifier.
04-05-2019
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