How to select Piezoelectric Sounders

[deepakchikane]

Hi
Can you please help me with Piezoelectric components selection?

Following is the part that i have selected for the design.
https://www.murata.com/~/media/webrenewal/support/library/catalog/products/sound/p37e.ashx?la=en-us

Part Number is-PKM17EPPH4001-B0

From the datasheet, i could not able to get the how much current it required to drive so derive final circuit to drive the same

dc

 

[BradtheRad]

Piezo beepers work on just a few volts. Current a few mA or tens of mA. The Murata data sheet states up to 15V generally.

Suitable frequency is 1-6 kHz. A simple pulsed DC or AC oscillator is sufficient. Square waves are okay. A 555 timer IC generates the right kind of pulse train.
The data sheet has these basic schematics:

* classic astable made from 2 transistors

* 2 logic gates, 1 capacitor, 1 resistor

 

[Audioguru]

The graphs show that the piezo transducer is loud only at certain frequencies and when at a distance of only 10cm (4 inches) from your ear.