We found this circuit in a 1964 Electronic Design. The triac and SCR can be replaced with modern equivalents according to the load. The circuit is for 160V network.
In the figure we have a circuit of a dimmer for fluorescent lamps. The circuit is from...
This circuit was found in a 1967 US documentation. The circuit applies to modern general purpose...
This configuration is traditional and can be found in many other circuits in this section. The...