20 MHz VHF CRYSTAL OSCILLATOR

  
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A typical circuit at 20 MHz is shown. The crystal, which has an internal series resistance RS, of 14 ©, oscillates at its third harmonic. The diode clamp D1 and D2 provides a constant amplitude control. The transistor operates continuously in a linear mode over a complete cycle of oscillation, and reflects a reasonably constant load across the c
20 MHz VHF CRYSTAL OSCILLATOR - schematic

rystal at an times.



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