oscillator

Discussion in 'General Electronics Chat' started by addtej, May 19, 2011.

  1. addtej

    Thread Starter New Member

    May 9, 2011
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    what is the source of oscillation in oscillators like hartley , collpitt oscillator ??
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
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    Welcome to the forums.

    The explanation of oscillators in general, and specific types is easily found using any search engine.
     
  3. Wendy

    Moderator

    Mar 24, 2008
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    The idea is if you have a specific question about a design, post the schematic and ask the questions. Gives other people something concrete to discuss.
     
  4. #12

    Expert

    Nov 30, 2010
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    6,817
    Oscillators oscillate because their output is connected to their input through a time delay and the active part has a net gain of more than 1.

    That's it in a nutshell.

    Next question?
     
  5. Adjuster

    Well-Known Member

    Dec 26, 2010
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    Are you wondering where the signal comes from to start the feedback loop oscillating? Often this arises from transients when the power is first applied, but oscillators which depend on this may not always start reliably. Many good oscillators will start as a result of internal random noise, even if the power supply voltage comes on very gradually.
     
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