This photoelectric circuit was found in a 70’s Ferranti's documentation. The circuit uses an operational one from that time. Modern equivalent components can be used in a new project.
Found in documentation from the 1990s, it uses a sound effects integrated circuit, the SN7677 from...
We found this circuit in a 2005 documentation. The circuit uses an infrared piezo sensor...
This circuit is from a 1979 publication, using displays of 7 segments of common cathode. The...