This dual balanced modulator configuration was obtained in a 1980s telecommunications documentation. The circuit makes use of transformers and the diodes are commonly used.
This radio's transistor is powered with the signal's own energy, producing its amplification....
This low power circuit for the FM band was found in a spy book from the 90s. The tunnel diode is...
We found this circuit in an Electronics Now since 1994. With it we can control a triac with a very...