The crystal oscillator consists of a timing board, electrodes, a support (base) or PKG, a cover, etc. The key part is the timely plate. The response plate is an elastomer with natural frequency. The response plate is a piezoelectric body, which has the largest amplitude and the smallest impedance at resonance. When detuning, the impedance increases rapidly.

The frequency stability condition of quartz resonator is mainly determined by three factors: load capacitance, excitation capacitance and frequency-temperature characteristics.

The timely crystal oscillator is fragile: the preservation method of crystal oscillator suggested by Shenzhen Yijin Electronic Engineering,

First of all, we should consider the humidity around it, take anti-extrusion measures and put it in a dry and ventilated place to avoid the change of other electrical parameters caused by humidity.

Secondly, the fragile crystal oscillator device should be well shockproof and should not be placed on a high shelf. In the process of use, it is not appropriate to let the crystal oscillator fall. Generally speaking, the crystal oscillator falling from the sky should not be used again.

3. In the process of crystal vibration brazing, the brazing temperature should not be too high and the brazing time should not be too long, so as to prevent the internal transformation and instability of the crystal.

4. When the shell of the crystal oscillator needs to be grounded, it is necessary to ensure that the shell and the pin are not accidentally connected to cause a short circuit, resulting in the crystal not vibrating.

5. Make sure that the solder joints of the two pins are not connected, otherwise the crystal will stop vibrating.

6. For the crystal oscillator that needs fine adjustment, pay attention to the influence of mechanical stress.

7. After welding, it should be cleaned to prevent the insulation resistance from failing to meet the requirements.