Quartz crystal oscillators are widely used in electronic devices as a stable frequency reference source. These oscillators work based on the piezoelectric effect of quartz crystal, which means that when a quartz crystal is subjected to a mechanical stress, it generates an electrical signal of a specific frequency. Quartz crystal oscillators are preferred over other types of oscillators due to their high stability, accuracy, and generally lower phase noise. Quartz crystal oscillators find applications in a wide range of electronic devices, including communication systems, navigation systems, and even wearable devices. Hy-Q International is a leading supplier of quartz crystal oscillators,