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JPS5850496

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DESCRIPTION JPS5850496
[0001]
Brief description of the drawings
[0002]
FIG. 1 is a schematic diagram of a conventional tone generator for direction indicator operation
sound generation, FIG. 2 is a schematic diagram of a general piezoelectric vibrator for selfoscillation, and FIG. 3 is a drive circuit of the conventional piezoelectric buzzer A circuit diagram
showing an example, FIG. 4 a is a voltage waveform diagram of a conventional turn indicator
power supply voltage, and FIG. 4 is a voltage waveform showing a ringing period when the
conventional power supply buzzer of FIG. Fig. 4C is a voltage waveform diagram showing a
ringing period when the piezoelectric buzzer of the present invention is sounded by the power
supply of Fig. 4a, Fig. 5 Fig. 6 and Fig. 7 relate to the present invention respectively. It is a circuit
diagram showing each example of a drive circuit of a piezoelectric buzzer. 8.22 и и и и и и и
Piezoelectric vibrator, 9, 10. 11 и и и Bias resistance resistor 12 и и и и и и и и и и и и и и и и и и и и и и и и
transistor oscillation transistor, 13.14 и и и и и и и и и и power supply terminal, 15 и и и
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04-05-2019
1
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