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 produces a clef sound when a pulse is applied to its input. The damping effect is...
With this circuit it is possible to improve the standing wave ratio (SWR) of a transmission system with...
In the figure we have a solar power source for experiments with this type of energy. The cells must...