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Engineering LibreTexts

9: Oscillators and Frequency Generators

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  • After completing this chapter, you should be able to:

    • Explain the differences between positive and negative feedback.
    • Define the Barkhausen criterion, and relate it to individual circuits.
    • Detail the need for level-detecting circuitry in a practical oscillator.
    • Analyze the operation of Wien bridge and phase shift op amp oscillators.
    • Analyze the operation of comparator-based op amp oscillators.
    • Detail which factors contribute to the accuracy of a given oscillator.
    • Explain the operation of a VCO.
    • Explain the operation of a PLL, and define the terms capture range and lock range.
    • Explain the operation of basic timers and waveform generators.

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