Pages: [1]   Go Down
Author Topic: piezo buzzer minimum voltage  (Read 3124 times)
0 Members and 1 Guest are viewing this topic.
0
Offline Offline
God Member
*****
Karma: 0
Posts: 593
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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.
Logged

Freelance engineer, consultant, contractor. Graduated from UW in 2013.

Left Coast, CA (USA)
Offline Offline
Brattain Member
*****
Karma: 361
Posts: 17294
Measurement changes behavior
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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

Logged

0
Offline Offline
God Member
*****
Karma: 0
Posts: 593
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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)
Logged

Freelance engineer, consultant, contractor. Graduated from UW in 2013.

Montreal
Offline Offline
Faraday Member
**
Karma: 29
Posts: 2592
Per aspera ad astra.
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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

Pages: [1]   Go Up
Jump to: