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@jeffrey-xA7lUP • Oct 9, 2012
@tarun-TYZzQz • Oct 9, 2012
@jeffrey-xA7lUP • Oct 9, 2012
@jeffrey-xA7lUP • Oct 10, 2012
I think you are mistaken palSteven BrooksHello Members,
'Piezoelectricity' is the ability of certain crystals to produce a voltage when subjected to mechanical stress. Piezoelectric effect is the property of some materials to convert mechanical energy to electrical current.
Thanks and Regards,
Steven Brooks
@henri-7eYVw8 • Oct 10, 2012
@jeffrey-xA7lUP • Oct 10, 2012
I getting a little confused her what do you meanHenriwhen pressure is applied on two crystals....a given amount of that pressure causes the generation of a small voltage,,,
@henri-7eYVw8 • Oct 10, 2012
i think you are wrong...Piezzoelectricity has nothing to do with conversion of mechanical energy to electric current,And it only applies to crystals....plus instead of using the term mechanical stress which is broad..it would be better to say PRESSURESteven BrooksHello Members,
'Piezoelectricity' is the ability of certain crystals to produce a voltage when subjected to mechanical stress. Piezoelectric effect is the property of some materials to convert mechanical energy to electrical current.
Thanks and Regards,
Steven Brooks
jeffrey samuelI think you are mistaken pal
The current produced due to piezoelectric effect is called piezoelectricity and the ability of the crystal is called as piezo property and the process involved is called as piezoelectric effect
@henri-7eYVw8 • Oct 10, 2012
is converted into electricity...the pressure causes movement of sub-atomic particles within the crystal structure,,,when a conductor is present...say a wire connected to a bulb from the two crystals....work is done to drive electrons through that conductor....causing somewat a p.djeffrey samuelI getting a little confused her what do you mean
Do you mean that a little of this pressure is converted into potential
@ramani-VR4O43 • Oct 10, 2012
@henri-7eYVw8 • Oct 12, 2012
when subjected to stress,,,,well according to Steven..it is that mechanical force that is converted to voltage...i think that is wrongbioramaniSteven is right.
Some crystals when subject to a mechanical stress (squeezed) produce a voltage. Conversely if a voltage is applied to these crystals there will be a mechanical distortion.
The first effect is used in piezoelectric devices like a gas lighter. When you push the plunger a spring releases the push energy in a sudden kick which produces the spark that lights the gas. The same effect is used in many other devices as well.
The reverse effect is used for generating ultrasound. When an ultra sound frequency voltage is applied to the crystal it starts vibrating mechanically at that frequency producing ultra sound.
@ramani-VR4O43 • Oct 12, 2012
Nothing wrong in that. When a crystal is distorted the change in the shape of the constituent unit cells changes the charge separation distance, which appears as a change in the surface charge. Conversely if a voltage change is applied to the crystal it deforms mechanically, which is how an ultrasonic transducer works.Henriwhen subjected to stress,,,,well according to Steven..it is that mechanical force that is converted to voltage...i think that is wrong
@henri-7eYVw8 • Oct 12, 2012
bioramani...i see what you mean...but don't you think its far-fetched?bioramaniNothing wrong in that. When a crystal is distorted the change in the shape of the constituent unit cells changes the charge separation distance, which appears as a change in the surface charge. Conversely if a voltage change is applied to the crystal it deforms mechanically, which is how an ultrasonic transducer works.
@ramani-VR4O43 • Oct 12, 2012
I am sure that you have used gas lighters, where you push a lever on top. The lever moves slowly and then there is a sudden jerk with a spark coming between the bottom two electrodes. This is because of this effect.Henribioramani...i see what you mean...but don't you think its far-fetched?
@henri-7eYVw8 • Oct 14, 2012
hahaha...100% agreement with youbioramaniI am sure that you have used gas lighters, where you push a lever on top. The lever moves slowly and then there is a sudden jerk with a spark coming between the bottom two electrodes. This is because of this effect.
<a href="https://en.wikipedia.org/wiki/Gas_lighter" target="_blank" rel="nofollow noopener noreferrer">Gas Lighter</a>
