Found in EEE documentation, this circuit can have the duration and frequency adjusted separately. SCRs can be modern equivalent types.
This circuit was found in a 1967 Philips publication. Transistors support equivalents and modern...
We found this circuit in the April 1993 Electronics Now magazine. Almost any general-purpose JFET...
In the figure we have the way to make the three-phase control of a motor using opto-diacs. The circuit is...