Go Down

### Topic: piezo buzzer minimum voltage (Read 5829 times)previous topic - next topic

#### frank26080115

##### Aug 13, 2011, 01:15 am
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.

#### retrolefty

#1
##### Aug 13, 2011, 01:26 am

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

#2
##### Aug 14, 2011, 01:07 am
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)

#### Magician

#3
##### Aug 14, 2011, 01:45 am
Piezo, despite semiconductors, don't have minimum voltage, so they start to operate at 0.

Go Up