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Is feedback required for oscillation in an "LC oscillator" ?

Discussion in 'General Electronics' started by Jean, Feb 27, 2004.

  1. Jean

    Jean Guest

    As clear from the subject I want to know whether any kind of feedback
    is required for oscillation in an LC oscillator??

    Jean
     
  2. Robert Baer

    Robert Baer Guest

    Yes, sort-of.
    One must have sufficient *gain* in order to (more than) overcome the
    losses, AND one must take that amplified output and feed it back so that
    the *phase* (at least at the frequency of interest) is the same as the
    original un-amplified signal.
    So just having feedback is not sufficent, but it is necessary.
     
  3. GPG

    GPG Guest

    YES
     
  4. Robert Baer

    Robert Baer Guest

    Necessary, but not sufficent; gotta spec the gain and gotta spec the
    phase.
     
  5. Kevin Weddle

    Kevin Weddle Guest

    I think, since the oscillators are named after their designers, they
    are more stable in their configurations.
     
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