We found this circuit in an old English documentation. Transistors support modern equivalents. The circuit converts signals in the 5 to 15 MHz band for tuning into a common medium wave radio.
This circuit was obtained in an old magazine from the 1970s. The circuit can still be assembled with...
This circuit was found in a Popular Electronics from the 90s. Transistors are general purpose...
This biestable vox circuit was found in an old documentation. The circuit makes use of components of...