Q about oscillators

Discussion in 'General Electronics Chat' started by fari, Nov 18, 2005.

  1. fari

    Thread Starter New Member

    Nov 14, 2005
    2
    0
    how oscillation starts in oscillators
    1. is the AC generated at the output of an oscillator is a result of small fluctuation
    which are amplified by the transistor or there is any other reason
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Generally it is the initial instabilty that occurs on power up that kick starts an oscillator. Also, the existence of random noise in the presence of high loop gain is another trigger source.

    hgmjr
     
  3. italo

    New Member

    Nov 20, 2005
    205
    1
    may i add phase and feedback. And not only oscillators are oscillating it could be a whole system because of as previously explained INSTABILITY. Power supply if designed to cross over 0Db at a sharp slope will oscillate at some higher frequency. just info.
     
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