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

Is mechanical energy preserved in process, A disk defamation horizontally o...

A disk defamation horizontally on a frictionless, mass less, rotational motion support such that the disk is spinning freely about a vertical axis through the centre of the disk an

Newton, newton; N (after Sir I. Newton, 1642-1727) The derived SI unit...

newton; N (after Sir I. Newton, 1642-1727) The derived SI unit of force, explained as the force needed to give a mass of 1 kg an acceleration of 1 m/s 2 ; thus it has units of

What is the magnifying power of the microscope, Q. A compound microscope co...

Q. A compound microscope consists of an objective lens of focal length 2.0cm and an eye piece of focal length 6.25cm separated by a distance of 15cm.How far from the objective sho

What is the radius of curvature, Q. Double convex lenses are to be manufact...

Q. Double convex lenses are to be manufactured from a glass of refractive index1.55, With both faces of the  same radius of curvature. What is the radius of curvature? Required if

Rainstorm, why wouldn''t you be electrocuted if you walked under an electri...

why wouldn''t you be electrocuted if you walked under an electric transmission line during a rainstorm?

Atom, what is an atom

what is an atom

WORK AND ENERGY, a boy throws a ball of mass 20 kg vertically upwards.it ra...

a boy throws a ball of mass 20 kg vertically upwards.it raises to a maximum height of 100 m.at what height will the kinetic energy be reduced to 70%

Motion in one dimension, a freely falling object near the Earth''s surface ...

a freely falling object near the Earth''s surface has constant?

Analogue multimeter, Analogue multimeter: Even the most basic analogue ...

Analogue multimeter: Even the most basic analogue multimeter can prove to be invaluable when in the hands of an experienced user. Simple measurements of voltage, current and r

Pv diagram, is always del U o in cyclic process

is always del U o in cyclic process

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