Describe your view about piezoelectric generator, Physics

Assignment Help:

Describe your view about piezoelectric generator.

Piezoelectric generator:

A slab of piezoelectric crystal is acquired and using that parallel plate capacitor is made. After that with other electronic components an electronic oscillator is designed to generate electrical oscillations > 20 kHz. Usually one can generate ultrasonic waves of the order of MHz by using piezoelectric generators.
Quartz slabs are preferred since this possesses rare physical and chemical properties. As a typical circuit diagram is demonstrated below:

444_Piezoelectric generator.png

The tank circuit has a variable capacitor 'C' and an inductor 'L' that selects the frequency of the electrical oscillations. While the circuit is closed current rushes by the tank circuit and the capacitor is charged, after completely charged no current passes through similar. After that the capacitor starts discharging by the inductor and therefore the electric energy is into the form of electric and magnetic fields connected with the capacitor and the inductor respectively. Therefore we obtain electrical oscillations in the tank circuit and along with the help of the other electronic components with a transistor, electrical oscillations are produced continuously. It is fed to the secondary circuit and the piezoelectric crystal (into our case a slab of properly cut quartz crystal) vibrates, as this is continuously subjected to varying (alternating) electric field, and generates sound waves. While the frequency of electrical oscillations is into the ultrasonic range in that case ultrasonic waves are generated. While the frequency of oscillation is matched along with the natural frequency of the piezoelectric slab in that case it will vibrate along with maximum amplitude. The frequency generated is demonstrated below:

f = p/2l (√E/ρ)

Here p = 1, 2, 3, ..., l is the thickness of the piezoelectric plate, ρ- the density of the piezoelectric material and E- the Young's modulus of the piezoelectric material.


Related Discussions:- Describe your view about piezoelectric generator

Explain insulators, Insulators: Insulators are those substances which d...

Insulators: Insulators are those substances which do not permit to pass electric current by them. e.g. Wood, Plastic, rubber, glass etc

How many types of fibers end are there, How many types of fibers end are th...

How many types of fibers end are there? Basically there are two types of fibers end are: adhesive encapsulated and state of the art fused, though some manufactures dispense alo

Why ferrite core has less eddy current loss than iron core, A ferrite core ...

A ferrite core has less eddy current loss than an iron core because ferrites have (A) High resistance. (C) Low permeability. (B) Low resistance. (D) High hyster

Will fiber optics systems be cheaper in the future, Will fiber optics syste...

Will fiber optics systems be cheaper in the future? Lighting fiber optics is not a certain mass-market product and maybe will never be. Even today mainly systems are, at least

Determine the magnitude, Determine the Magnitude The cantilevered beam...

Determine the Magnitude The cantilevered beam shown below has two force couples acting on it as shown.  The value of C1 in Newtons is given in P25.  Determine the magnitude of

Heat therapy - c- radiowave heating( diathermy), C- Radiowave Heating( Diat...

C- Radiowave Heating( Diathermy) Short wave diathermy utilized electromagnetic wave in radio range ( ~10m ) and microwave range (~ 12cm) .Short wave diathermy penetrate deep into

Can you explain single slit diffraction, Can you explain in single slit dif...

Can you explain in single slit diffraction intensity of 1 st secondary maximum is less than that of principal maximum by how many times?

Free body diagram, illustrate the situation. the child is on the slide

illustrate the situation. the child is on the slide

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd