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A crystal oscillator is an electric oscillator type circuit that uses a piezoelectric resonator, a crystal, as its frequency-determining element. Crystal is the common term used in electronics for the frequency-determining component, a wafer of quartz crystal or ceramic with electrodes connected to it.
Working Principle: The oscillator works by applying an alternating voltage to a crystal, causing it to vibrate at its natural frequency. Circuit Design: Crystal oscillators are designed to operate in series-resonant mode (low impedance) or parallel-resonant mode (high impedance).
Electronics Tutorial about Quartz Crystal Oscillator including Harmonic, Overtone, Pierce Oscillator and Crystal Quartz Oscillator Circuits
In LC and RC oscillators, the oscillator frequency changes due to change in temperature, power supply voltage or even slight change in the component values. In the...
The way crystals (and ceramic resonators) work is that they are made of a piezoelectric material that produces a voltage when they are distorted in shape. A voltage applied will cause a distortion in shape.
Armed with this knowledge, we’ll take a look at two different oscillator topologies and discuss how the circuit architecture forces the crystal to oscillate at a particular frequency. Based on this discussion, we’ll be able to look at the definition for parallel and series crystals—two technical terms that can sometimes cause confusion.
This article explains how crystal oscillators work and discusses their types, advantages, and disadvantages. Learn more about this critical component in electronics.