Published:2009/7/23 21:07:00 Author:Jessie | From:SeekIC
Q1 is turned on when input exceeds 6.5 v, and input remains clomped at this level. As a result, input signal cannot drive additional Schmitt circuits that may have higher trigger levels.-J. Gaon, Diode and Resistor Increase Input Resistance of Schmitt, Electronics, 39:12, p 110-111.
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