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Questions about the piezoelectric effect

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LAN_403

tleed

Fri Sept 14 2007, 07:30AM

Registered Member #1001 Joined: Fri Sept 14 2007, 07:06AM
Location:
Posts: 1

Hello everymembers,
I am new here. I have some questions about PiEZOELECTRIC

1) Have I apply a force changing (vibration) to a crystal piezoelectric to get electric energy ?
2) If I place a constant force for days on a piece of piezoelectric, I will get a constant V (Volt) for days ?

Thank you very much for reply
Tleed

Dalus

Fri Sept 14 2007, 07:51AM

Registered Member #639 Joined: Wed Apr 11 2007, 09:09PM
Location: The Netherlands, Herkenbosch
Posts: 512

First of all Google is your friend, it's a very simple question that can be found with ease.
and why are you cross posting in general chatting?

Bjørn

Fri Sept 14 2007, 10:37AM

Registered Member #27 Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058

I deleted the other thread and renamed this one.

Steve Conner

Fri Sept 14 2007, 10:52AM

Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706

The answer to (2) is Yes, but since the piezo is a capacitor, the constant voltage will disappear when you try to draw current from it.

Marko

Fri Sept 14 2007, 10:57AM

Registered Member #89 Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145

For 1, yes too. Only change in force will yeld in energy output.

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