PRECISION_CRYSTAL_FREQUENCY_CHECHER

Published:2009/7/10 5:38:00 Author:May | From:SeekIC

This circuit uses a Colpitts oscillator (Q1) with a buffer amplifier (Q2) to test crystals. S1 selects three load conditions-series (S), 20 pF, and 32 pF. Leads to S1 and the crystal should be kept short. The circuit should be useful over 2-to 20-MHz.



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