Found in Radio Electronics this circuit uses a fotodiac to drive a triac. The circuit can use equivalent triacs.
The Schmitt-trigger shown in the figure is TTL compatible and is shown in the figure using...
This simple radio receiver can pick up AM stations in the MW range from 520 to 1600 kHz using a...
This transistorized circuit, with germanium transistors from the 60s, was obtained in a technical...