Piezoelectric Gas Lighter Paper Example

Piezoelectric transducers

These transform electrical energy into mechanical energy. The mechanical energy produced is vibrational and is often sound or ultrasound that is used in other applications. There are couple of advantages of using piezoelectric transducers over electromagnetic transducers in the production of audible sounds such as: compactness, simplicity, reliability as well as the ability to produce high sounds even with minimal energy input.

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The reversible nature of the piezoelectric effect allows transducers to generate a mechanical signal from an electrical signal as well as convert incoming sound signals into electrical signals. Ultrasonic vibrations produced by piezoelectric transducers are used for cleaning, drilling hard elements, hospital diagnosis etc.

Quartz Clock

A quartz clock utilizes the reversible nature of piezoelectricity to keep time. An electrical signal originating from the battery is input into a crystal making it oscillate thousands of times per second. A configured electronic circuit slows these oscillations to a single beat per second which is then used by a very small motor and a system of precision gears to drive the three hands of the clock (hour, minute and second).

Working of a quartz clock

From the diagram above:

• Energy from the battery to the microchip
• Microchip causes piezoelectric crystal to oscillate
• Oscillations are detected by microchip
• Conversion of electrical to mechanical energy
• Stepping motor rotates gears.
• Gears rotate around the clock-face in timed intervals
• The inside of a quartz clock

Piezoelectric Sensors

These transform physical parameters like pressure to electrical signals. In some of these sensors, the action of the physical factor is right on the piezoelectric component others deploy an acoustical signal to create vibrations in the element, the ambiences are then transformed into electrical signals.

Piezoelectric Accelerometer

A piezo electric accelerometer encompasses a mass attached to a piezoelectric sparkler and placed on a case. When a vibrational force is applied, the mass on the piezoelectric element remains undisturbed in line with the law of inertia. Consequently, the mass applies more pressure on the element thus stretching it. The force shares a direct proportionality with acceleration in line with Newton's second law, F=ma and produces a charge. The charge produced can then be converted into a low voltage output by incorporating electronic circuits.

References

(2018). Retrieved from https://www.teachengineering.org/content/uoh_/activities/uoh_piezo/uoh_piezo_lesson01_activity1_presentation_v2_tedl_dwc.pdf

Hanly, S. (2018). Piezoelectric Accelerometers: Mysteries On How They Work... Revealed!. Retrieved from https://blog.mide.com/piezoelectric-accelerometers-how-they-work-and-where-to-buy

Piezoelectricity - How does it work? | What is it used for?. (2018). Retrieved from https://www.explainthatstuff.com/piezoelectricity.html