Vacuum Tube PLL

Thread Starter

DrNick

Joined Dec 13, 2006
110
I am looking in to building a phase locked loop out of vacuum tubes. Can anyone recommend any tube models that would be good for making VCO's and phase detectors?
 

John Luciani

Joined Apr 3, 2007
477
You didn't mention the frequency of the VCO. You could check out some of the
early Theremin schematics. The RCA Theremins were made with tubes.
The Theremin VCOs are in the 100-300KHz range.

Try thereminworld.com for some schematics.

(* jcl *)
 
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