How do crystal oscillators work?

Answer

The crystal oscillators functions by using the mechanical resonance of a vibrating crystal of piezoelectric material to build or create an electrical signal with a perfect frequency.
1 Additional Answer
Crystal oscillators work by the piezoelectric effect, which is the displacement in a dielectric, insulating material from the application of a voltage. In a piezoelectric such as quartz, applying a voltage to the material will cause the ions in the material to move, resulting in a small amount of stretching or compression of the material. If the voltage is in the form of a wave, then the crystal will vibrate or oscillate.
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