This circuit was found in Delco documentation from 1966. The components are from that time. Information on the transformer winding is not provided.
This circuit can use any comparator or even an operational amplifier. We can use the LM339 and the...
This circuit is from an old American amateur radio manual. The circuit shows how to use a Varicap...
This circuit was obtained from the December 1990 issue of Radio Electronics magazine. The circuit...