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

[Jean]

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

Jean

 

[Robert Baer]

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

Jean

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.

 

[GPG]

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

Jean

YES

 

[Robert Baer]

YES

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

 

[Kevin Weddle]

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