View Single Post
  #73   Report Post  
Old July 29th 05, 03:56 PM
Caveat Lector
 
Posts: n/a
Default

Thank you - curiosity satisfied.
Just curious as how often these are used today
I do know about colpitts, hartley, pierce, wien, clapp, TGTP, relaxation,
crystal, negative resistance, dynatron, etc
Anyone remember the dynatron oscillator? Tetrodes me lads tetrodes.

--
CL -- I doubt, therefore I ask






"Ham op" wrote in message
...
Caveat Lector wrote:

Just out of curousity -- what modern Ham gear uses a Colpitts oscillator
or a swinging choke ??

Then why ask these questions on a 2005 Ham test ??

Maybe ask about a VCO or a crowbar circuit ??



All of them!!! The reference oscillator in every phase locked loop is
generally a Colpitt's oscillator. I suspect that every oscillator in the
VCO circuit is also Colpitt's.

By simply asking the question you make the point!!!

The required level of knowledge for a license today is significantly
poorer than 40 or 50 years ago.