This control circuit using a low voltage switch was found in the September 1987 Radio Electronics magazine. The triac must be matched to the load and the mains voltage.
In the figure we have a stereo decoder from the 70's with pilot lamp for signal indication. The...
This circuit was found in an Elektor from the 90s. It makes use of digital CMOS integrated devices...
We found this mains-powered switch circuit in Electronics Now magazine from July 1994. It could be...