In episode four of our Oscillator Design Principles multipart series, David Meaney discusses frequency pulling methods and circuit load capacitance. A parallel frequency is when there is an external load capacitance forcing a crystal to oscillate in a frequency range slightly above its series resonant frequency. The amount of change in the frequency depends on the crystal Q and stray capacitance of the circuit. Pulling can also be done electrically to change the value of the capacitance like in VCOs, VCXOs, and VCTCXOs. To learn more about oscillators design basics, visit our channel for our next video on oscillator start-up time and reactance in an oscillator circuit!
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Frequency Pulling Methods and Circuit Load was last modified: June 30th, 2022 by