Found in old documentation, this circuit can be implemented even today with the use of a 2N2646 for the unijunction and a TIC106 for the SCR.
This shield circuit is suggested by Texas Instruments and can employ almost any optical coupler...
In the figure we have a monostable that is activated with switch S1 and pressed for an instant. The...
This circuit for alternating current was found in a 1965 General Electric documentation. The...