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 was found in a 1992 publication. Its purpose is to time the activation of a doorbell...
This automotive circuit was found in the June 1997 issue of Electronis now magazine. The circuit uses...
This oscillator was found in the January 1996 issue of Electronics Now magazine. The frequency is given by...