What is Crystal Resonator & Crystal Oscillator?|Tagalog Tutorial

Crystal Oscillators
The principle of crystal oscillators depends upon the Piezo electric effect. The natural shape of a crystal is hexagonal. When a crystal wafer is cur perpendicular to X-axis, it is called as X-cut and when it is cut along Y-axis, it is called as Y-cut.

The crystal used in crystal oscillator exhibits a property called as Piezo electric property. So, let us have an idea on piezo electric effect.

Piezo Electric Effect
The crystal exhibits the property that when a mechanical stress is applied across one of the faces of the crystal, a potential difference is developed across the opposite faces of the crystal. Conversely, when a potential difference is applied across one of the faces, a mechanical stress is produced along the other faces. This is known as Piezo electric effect.

Certain crystalline materials like Rochelle salt, quartz and tourmaline exhibit piezo electric effect and such materials are called as Piezo electric crystals. Quartz is the most commonly used piezo electric crystal because it is inexpensive and readily available in nature.

When a piezo electric crystal is subjected to a proper alternating potential, it vibrates mechanically. The amplitude of mechanical vibrations becomes maximum when the frequency of alternating voltage is equal to the natural frequency of the crystal.

Working of a Quartz Crystal
In order to make a crystal work in an electronic circuit, the crystal is placed between two metal plates in the form of a capacitor. Quartz is the mostly used type of crystal because of its availability and strong nature while being inexpensive. The ac voltage is applied in parallel to the crystal.

🔗Resources used in this video:

https://en.m.wikipedia.org/wiki/Crystal_oscillator

https://www.electronics-tutorials.ws/oscillator/crystal.html

https://www.electrical4u.com/crystal-oscillator/

https://www.tutorialspoint.com/sinusoidal_oscillators/sinusoidal_crystal_oscillators.htm

https://www.sciencedirect.com/topics/earth-and-planetary-sciences/crystal-oscillator

https://eepower.com/technical-articles/introduction-to-quartz-crystal-oscillators/

https://www.electronics-notes.com/articles/electronic_components/quartz-crystal-xtal/resonator-basics-tutorial.php

https://www.chinachipsun.com/__trashed/

https://byjus.com/question-answer/why-do-we-use-crystal-oscillator/

https://medium.com/@diyelectronics3/why-is-crystal-oscillator-used-in-the-circuit-e33ebc9b0dff

https://www.golledge.com/news/role-of-oscillators-in-electonic-circuit/


Video chapter:

0:00 Intro
00:21 What is Frequency?
01:25 What is Hertz (Hz)?
02:13 What is Oscillator?
03:10 How Oscillator works?
05:29 Common Types of Oscillator
06:25 What is Crystal Oscillator?
08:17 History of Crystal
08:51 Working Principle of Crystal Oscillator
09:34 Block Diagram of Crystal Oscillator
10:14 Crystal Oscillator Configuration
11:27 Crystal Oscillator Tester
12:13 How to Test Crystal Oscillator?
14:40 Advantage and Disadvantage of Crystal Oscillator


Crystal Tester Schematic Diagram & PCB Layout:
Ongoing...


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