论文部分内容阅读
本文介绍用大温度系数电容作为晶体振荡器的负载电容,从而达到温度补偿目的,屏弃了传统的用热敏电阻网络控制变容二极管电容的补偿方法,讨论了这种振荡器的补偿原理。实验结果表明,对于粗、中精度的温度补偿晶体振荡器的生产,对缩简工序、降低成本有一定的实用价值。为配合PB-2频率计集成化试制,我们承担了1MHz温度补偿晶体振荡器的试制任务。为了缩减工序,降低成本,采用了选择晶体切型和合理选配不同温度系数槽路电容的方案。现将这种方法作如下介绍。
This paper introduces the use of large temperature coefficient of capacitance as the crystal oscillator load capacitance, so as to achieve the purpose of temperature compensation, reject the traditional control of the thermistor capacitance varactor diode compensation method, discussed the compensation principle of this oscillator. The experimental results show that for the coarse and medium precision temperature compensation crystal oscillator production, to reduce the process, reduce costs have some practical value. To tie in with PB-2 frequency meter integrated trial, we assume the 1MHz temperature compensation crystal oscillator trial task. In order to reduce the process, reduce costs, the choice of crystal type and the reasonable choice of different temperature coefficient tank capacitance scheme. Now this method is introduced as follows.