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Electronic oscillator division types and use

Electronic oscillator division types and use

Electronic oscillator division types and use

Introduction to oscillator

  • An oscillator is a amplifier and it is a close loop circuit or network. It uses thePositive feedback. It is not require the externel signel and generate the a desired frequency
  • A oscillatpr acts like generator, It oscillates the constant amplitude and frequency. Oscillator can generate the frequency upto gigahertz.

    • Classification of the Oscillators

  • Oscillators are classified based on the type of waveforms generate from the oscillator, range, frequency, parameters used.

    • Types of oscillatprs

    1. LC Oscillator
    2. Hartley Oscillator
    3. Colpitts Oscillator
    4. Miller Crystel Oscillator
    5. Crystal Oscillator
    6. RC Phase Shift Oscillator
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    Miller Crystal Oscillator

    Miller Crystal Oscillator Miller Crystal Oscillator Similar to modifications in Colpitt's oscillator, the Hartley oscillator circuit can be modified, to get Miller crystal Oscillator In Hartley oscillator circuit, two inductors and one capacitor is required in the tank circuit. One inductor is replaced by the crystal which acts as an inductor for the frequencies slightly greater then the series resonant frequency. The tuned circuit of L1 and C is offtuned to behave as an inductor i.e. L1. The crystal behaves as other inductance L2 between base and ground. the Internal capacitance of the transistor acts as a capacitor required to fullfill the elements of the tank circuit The crystal decides the operating frequency of the oscillator.
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