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Principle of quartz crystal component

Crystal is the use of quartz crystal piezoelectric effect, used to produce high-precision oscillation frequency of an electronic component, with the external circuit to be generated with the oscillation, the so-called piezoelectric effect is the surface of the quartz wafer plus a voltage, Crystal) will produce mechanical deformation, if the piezoelectric quartz crystal electrodes are placed in the opposite direction and the voltage between the electrodes, then the strong pressure will act on the internal crystal charge. If the crystal is properly installed, but the crystal is deformed inside, then it will form an electromechanical system, if it can be properly activated then it will form the oscillation frequency, the use of this feature, you can use quartz resonator instead of LC Capacitors) resonant circuit, filters and so on.