This circuit was found in an ancient American documentation. With it is possible to double the frequency of a transmitter For the range of 6 meters obtaining 8 W. The circuit makes use of varicap.
Found in the April 1998 Electronics Now magazine, this circuit controls loads that rely on the...
Found in a Westinghouse Silicon Power Handbook from the 60s, this circuit makes use of period...
This circuit uses uncommon Texas Instruments components today. The circuit is from an American...