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Run a motor using piezoelectric crystal

KEERTHI G
Expert 2610 points

Hi friends, 

I want to run the motor using piezo electric crystals.

Here i need to get a power from piezoelectric crystals and stored it in battery. I use this power to run the motor. 

I don't know which is possible or not. Because many documents says power from piezo is very low(Micro volts). 

Please give suggestion for me... 

I am eagerly waiting for ur replys... 

Thanks in advance. 

Regards, 

Keerthi G

  • 0
    Guru 227245 points

    Power is not Volt. Power is Watt. A Piezo can reach high voltages (enough to make a spark in a gas lighter). However, the total energy per Piezo press is very low (only few µWs).
    When you press a crystal, this results in a tiny charge moved on the surface of the Piezo. You can move this charge through a bridge rectifier into a capacitor. However, it will take lots of moves to collect as significant amount of energy in the capacitor. I doubt you’ll be able to continuously operate a motor with it. But of course this can be used to (re)charge a battery for a sensor module that runs on very low power.

    Nevertheless, this topic is in the wrong forum, as this is the MSP430 MCU forum. J

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