Found in 90s Radio Electronics, this shield can control high voltage loads in the power grid. Isolation is guaranteed by the use of an optical coupler.
This circuit is just a curiosity found in a 1990 documentation, since the integrated circuit used...
This circuit was obtained in a 1964 Electronic Design. The circuit uses components from that time,...
Found in a 1992 book, this circuit is intended for operation with audio signals. Equivalent...