This circuit can be used as an amplifier for musical instruments or even with your cell phone. The circuit is old and was found in the 1990 edition of Radio Electronics Experimenter magazine.
In the figure we have the way to make the three-phase control of a motor using opto-diacs. The circuit is...
This circuit was obtained in a 90s Popular Electronics. It is used for tuning on AM radios. The...
We found this circuit in the May 1972 issue of Radio Electronics magazine. Its purpose is to teach...