This circuit was described in an article in Electronics Now magazine in December 1995. The circuit uses integrated circuits that are still well known today.
This simple experimental circuit using only transistor produces a tone given by C1 and C2. Tone is...
This is yet another balanced modulator circuit for SSB transmission. This two-diode circuit was...
This circuit can be used to generate signals from 300 kHz to 10 MHz, depending on the crystal...