Found in a 1967 RCA documentation, this AC power grid contactor can be fitted with modern equivalent components. The SCR and the diodes must be according to the load current.
This circuit, which is part of a percussion instrument, was found in the September 1979 issue of...
The circuit shown in the figure, generates a positive pulse whose duration depends on C1, from the...
Found in the 1989 Radio Electronics Experimenter special edition, this circuit was designed for...