Sunday, 12 May 2013

Crystal controlled oscillator

The most stable and accurate type of oscillator used crystal in feedback circuit to control the frequency.

there are three types of crystal used
  • Quartz
  • Tourmaline
  • Rochelle salt
but Quartz is one of the type of crystal which exhibits property of piezoelectric effect.

A great advantage of crystal oscillator is that it exhibits a very high Q.

crystal oscillator (Parallel resonant tank circuit)


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