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.
Any operational amplifier can be used in this circuit. The 741 is the most common. Power supply must...
This circuit was found in an ancient American documentation. With it is possible to double the...
The circuits shown in figure 2 are suggested by Texas Instruments (www.ti.com) make use of the...