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Topic: piezo buzzer minimum voltage (Read 3527 times) previous topic - next topic

frank26080115

I'm looking at

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=102-1264-1-ND

What is the minimum voltage that is required to drive this buzzer or a similar piezo buzzer? The datasheet states that it is a maximum of 25V p-p, and it draws 4.5mA at 5V p-p, but I need to know if 2.7V is enough.
Freelance engineer, consultant, contractor. Graduated from UW in 2013.

retrolefty


I'm looking at

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=102-1264-1-ND

What is the minimum voltage that is required to drive this buzzer or a similar piezo buzzer? The datasheet states that it is a maximum of 25V p-p, and it draws 4.5mA at 5V p-p, but I need to know if 2.7V is enough.


Well page 4 of their "training manual" give a voltage range of 3volts up to 250v depending on model. So your 2.7 is marginal, but it will probably make some kind of squeek.

http://products.cui.com/CUI_CMT-1102_Product_Training_Presentations.pdf?fileID=6296

Lefty


frank26080115

Thanks for that, I should have read it

I am mainly concerned about any properties of the piezo element that would give it a minimum voltage (analogous with the voltage drop of diodes at the P-N junction)
Freelance engineer, consultant, contractor. Graduated from UW in 2013.

Magician

Piezo, despite semiconductors, don't have minimum voltage, so they start to operate at 0. 

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