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在无线电通信设备和电子仪器中,广泛使用各种晶体振荡器。对于那些频率稳定度要求在10~(-7)～10~(-9)数量级作为频率基准应用的场合,都采用高稳定度晶体振荡器。它选用高精度石英谐振器,并置于恒温槽中。虽然它的稳定度很好,但由于电路复杂,功耗大,体积重量也比较大,而且需要较长的预热时间才能得到给定的频率稳定度,因此,应用受到一定限制。而温度补偿式晶体振荡器的体积小,省电,具有比普通晶体振荡器频率稳定度高以及接通电源无需预热时间就能达到预期的稳定度等优点,受到越来越多的重视。
Various types of crystal oscillators are widely used in radio communication apparatuses and electronic instruments. For those frequency stability requirements in the order of 10 ~ (-7) ~ 10 ~ (-9) as the frequency of the application of occasions, the use of high-stability crystal oscillator. It uses high-precision quartz resonator, and placed in a thermostatic bath. Although its stability is very good, its application is limited due to the complicated circuit, large power consumption, large volume and weight, and long preheating time to obtain the given frequency stability. The temperature compensated crystal oscillator, small size, power saving, with a higher frequency stability than normal crystal oscillator and connected to the power without preheating time can achieve the desired stability, etc., by more and more attention.