This power control from a 1968 Motorola manual shows how to use a contemporary diac as a zero-crossing detector. The SCR is of the type depending on the power of the load.
This circuit was found in the April 1984 issue of Radio Electronics magazine. The integrated...
The presented circuit was found in the National Semiconductor's Linear Applications Handbook from...
This circuit is basically the same as the previous configuration (CB15616E) with a power stage with...