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.
This circuit is from an Italian magazine Radio Elettronica of January 1977. The circuit shows how...
This is one of the possible timer configurations with the 555. We found it in October 1986 Radio...
This circuit was found in a 1969 US documentation. It provides a signal that can be externally...