This circuit was found in American documentation from the 90's. The transformer determines the output voltage. The transistor must be equipped with a heat sink.
The Texas TL783 integrated circuit is a three-terminal high voltage regulator with a wide range of...
This circuit was obtained from ancient American documentation. The operational is from the time...
Found in Popular Electronics' 90s, this small megaphone is based on LM386. The circuit uses a high...