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.
This circuit uses an unusual Motorola integrated. The circuit is from Motorola's 1990 Linear...
This circuit was found in a September 1987 Radio Electronics. The current through the switch is...
The circuit shown in the figure triples the alternating voltage providing a continuous output...