This circuit was originally intended for reading movie soundtracks. The circuit is from 1967 and was found in an English publication. The sensor is semiconductor type.
In the figure we show another interesting application for integrated circuit 4001. This circuit...
Ohmite TGHD non Inductive High Power Resistors Available in SOT-227 enclosures, these Ohmite...
This circuit was found in an Elektor from the 90s. The circuit is critical, requiring a very...