免费上传RF书籍-综合文档

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文件名称：免费上传RF书籍-综合文档
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更新时间：2021-05-25 01:15:58
crystal oscillators circuits Crystal Oscillators and CircuitsCrystal Oscillators and Circuits Bill Sheets K2MQJ Rudolf F Graf KA2CWL It is often required to produce a signal whose frequency or pulse rate is very stable and exactly known. This is important in any application where anything to do with time or exact measurement is crucial. It is relatively simple to make an oscillator that produces some sort of a signal, but another matter to produce one of relatively precise frequency and stability. AM radio stations must h