In episode five of our Oscillator Design Principles multipart series, Davide Meaney covers drive level and negative resistance. The drive level is the power dissipated by the crystal when it is operational; if the highest drive level is exceeded, the crystal may become unstable and may have many side effects as bad as complete crystal failure. Negative resistance is accomplished by temporarily installing a variable resistor in series with the crystal unit and tested until the negative resistance has been calculated.

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Drive Level and Negative Resistance was last modified: June 30th, 2022 by ECS Inc.