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Advice for a buzzer element Answered

Hello I am developing a small device which requires  a sound alarming. The idea of the device is to be attached to your phone for example and if you wonder where your phone is, the device will turn on the sound alarming in order to give you information for its location.

So, I am searching for a buzzer element which:
- consumes up to 3.6 V;
- is small (diameter up to 20 - 25 mm) and thin of course;

I decided to use a buzzer element similar to this one http://www.digikey.co.uk/product-detail/en/CEB-20D64/102-1126-ND/412385 but I am not sure if it will do the job. I am concerned about something else, I have a buzzer at home which produces sound of high frequency and when you close your eyes it is absolutely impossible to find out where the sound comes from.

Can somebody help me, please?

Thanks a lot!!!


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5 years ago

That's a piezo-electric buzzer - be aware that it needs a signal to buzz, not just a current. For example:


As for the directional thing, I completely agree - you need a varying tone, possibly from two buzzers at slightly different frequencies.