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.
We found this circuit in the Linear Applications Handbook by National Semiconductor. The base is...
Being able to operate with frequencies up to 100 kHz, this circuit was found in a 90’s...
This circuit is from a year 2000 documentation. It generates pulses as fast as a battery or as...