Piezoelectric crystal and air pressure

In summary, a piezoelectric crystal is a type of crystal that can generate an electric charge when mechanical stress or pressure is applied to it. It is commonly used in various electronic devices, medical equipment, and industrial applications. Air pressure can affect piezoelectric crystals by exerting a force on them, altering their sensitivity and accuracy. While piezoelectric crystals require an external mechanical force to generate electricity, changes in air pressure can indirectly affect them. Compared to other types of pressure sensors, piezoelectric crystals have advantages such as high sensitivity, fast response time, durability, and resistance to electromagnetic interference.
  • #1
Adamant
2
0
Will air pressure induce a voltage of a piezoelectric crystal or does it need to be mechanically compressed? My guess is that it would depend on the permeability of the crystal
 
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  • #2
A change in air pressure will induce a voltage.
 
  • #3
Thread re-opened on request to keep this duplicate and close the other.

@Adamant, per my PM, please provide more detail about the setup you are describing. Piezoelectrics are indeed used as absolute pressure sensors, but my suspicion is that you are after something that works differently and won't produce a piezoelectric effect.
 
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1. What is a piezoelectric crystal and how does it work?

A piezoelectric crystal is a type of crystal that can generate an electric charge when mechanical stress or pressure is applied to it. This is known as the piezoelectric effect. When the crystal is compressed or stretched, the arrangement of its atoms changes, creating an electric charge.

2. What are the applications of piezoelectric crystals?

Piezoelectric crystals are commonly used in various electronic devices, such as sensors, actuators, and transducers. They are also used in medical equipment, such as ultrasound machines, and in industrial applications, such as precision control and monitoring systems.

3. How does air pressure affect piezoelectric crystals?

Air pressure can affect piezoelectric crystals by exerting a force on them, causing them to deform and produce an electric charge. Changes in air pressure can also alter the sensitivity and accuracy of piezoelectric sensors and transducers.

4. Can piezoelectric crystals generate electricity from air pressure alone?

No, piezoelectric crystals require an external mechanical force to produce an electric charge. However, changes in air pressure can indirectly affect the crystal by causing it to vibrate or deform, which then generates an electric charge.

5. How do piezoelectric crystals compare to other types of pressure sensors?

Piezoelectric crystals have several advantages over other types of pressure sensors, such as their high sensitivity, fast response time, and durability. They can also operate in a wide range of temperatures and are not affected by electromagnetic interference.

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