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Precision Crystal Frequency Checker

2017-08-23 02:19  
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This circuit uses a Colpitts oscillator (Ql) with a buffer amplifier (Q2) to test crystals. SI selects
Precision Crystal Frequency Checker

three load conditionsa€”series (S), 20 pF, and 32 pF. Leads to SI and the crystal should be kept short. The circuit should be useful over 2-to 20-MHz.

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