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1_MHz_PIERCE_OSCILLATORS

2016-08-17 02:45  
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1_MHz_PIERCE_OSCILLATORS
Simple network design is a key feature of the Pierce circuit, as these 1-MHz oscillators illustrate .Operating the crystal slightly above resonance (Fig.21-5a) requires only one high-gain transistor stage.Operating it exactly at series resonance (Fig. 21-5b) requires an extra RC phase lag and two transistors which can have lower gain.