20_MHz_VHF_CRYSTAL_OSCILLATOR

Published:2009/7/7 7:47:00 Author:May | From:SeekIC

A typical circuit at 20 MHz is shown. The crystal, which has an internal series resistance RS, of 14 Ω , 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 crystal at an times.



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