With this passive circuit it is possible to modulated in amplitude a low intensity RF signal. The circuit is from old American documentation and uses a germanium diode as its main component.
This configuration from a 1976 technical documentation shows how to use a varicap in a direct...
This circuit is from Radio Electronics. The magazine no more exists, but the circuit can be...
The purpose of this circuit is to cut the peaks of a sinusoidal signal so that it is close to a...