Help with basic piezoelectric generator circuit design

Thread Starter

amv101

Joined Aug 21, 2018
4
Hello,

I want to experiment with the properties of piezoelectric generator devices. I am looking to get a few PZT devices where I can stress / impact the material to produce current.

I have concept to use multiple PZT devices where they will be stressed simultaneously. The PZT devices output a small AC wave, and figure I need to run diode bridges to convert the AC to DC, like my research has suggested.

My question is, how can I run them in series with the diode bridges to output a larger voltage? I figure each device needs their own bridge, and then I can wire the bridges in series, with a smoothing cap at the end.

Does this design look feasible? Any suggestions or ideas?

Thanks for your time!

PiezoElectricBasicCircuit.png
 

Thread Starter

amv101

Joined Aug 21, 2018
4
Should work, but don't expect much current. Piezos are good at producing voltage but have a high resistance.

Thanks for the help.

Would each bridge need to be spec'd to handle to total voltage / current coming out of the series measured at the output, or can each bridge just need to handle the output of each individual PZT device? If that makes sense.
 
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