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.
This circuit with SCR is from a Radio Electronics magazine from September 1965. It is a commercial...
This circuit was found in the July 1986 issue of Radio Electronics magazine. The circuit has a...
This circuit was found in a QST from the 1990s. The circuit expands the scale of a 10V instrument to...