This dual balanced modulator configuration was obtained in a 1980s telecommunications documentation. The circuit makes use of transformers and the diodes are commonly used.
Using a 4018 IC and one gate of the 4081 it is possible to divide the frequency of digital signals by...
This circuit has a 200 kHz bandwidth and a low input current. The circuit is from the 80's, but...
This circuit is intended to switch high frequency antennas using common diodes. The circuit is from...