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Sound Components FAQ

Piezoelectric Sounders
Piezoelectric Diaphragms
Piezoelectric Buzzers

Piezoelectric Sounders

Q Please give me an example of the drive circuit for a Piezoelectric Sounder or a Piezoelectric Diaphragm (External Drive Type).
Q Please tell me a current consumption by a Piezoelectric Sounder (External Drive Type).
Q Does a Piezoelectric Sounder (Eternal Drive Type) have polarity?
Q Is there any problem with using a Piezoelectric Sounder (External Drive Type) at a frequency other than that used to obtain the specified sound pressure level?
Q Can a Piezoelectric Sounder (External Drive Type) intended to be driven at 4 kHz in order to obtain the specified sound pressure level is driven at 2 kHz, and the sound pressure increased as well?
Q Please tell me how to replace an Electromagnetic Buzzer with a Piezoelectric Sounder (External Drive Type).
Q How can I know lineup of Sound Components?
Q I would like to know about product specification.
Q Please explain the difference between automotive grade and consumer grade?
Q Is there data available for the relationship between the Input signal(Voltage, Frequencies, Wave Shape) and the Sound Pressure Level?
Q What is the FFT(*) spectrum of sound characteristics for tone?
(*) Fast Fourier Transform
Q What is the relationship between Sound Pressure Level and Duty Ratio?

Q What are the materials used in constructing Sound Components ?

Q Is there any trouble when DC bias voltage is applied to the component for long periods?

Q Is it possible to distinguish between for Automotive and for Consumer by part number?

Q Do Sound Components acquire UL standard certification on flame resistance(UL94)?

Piezoelectric Diaphragms

Q Do Sound Components acquire UL standard certification on flame resistance(UL94)?

Q Is it detrimental if the Piezoelectric Diaphragm is implemented into any other applications than a sounder?

Piezoelectric Buzzers

Q What are the materials used in constructing Sound Components ?

Q Do Sound Components acquire UL standard certification on flame resistance(UL94)?