This shield with full-wave triggering was found in the Radio Electronics Experimenter magazine of 1989. The Triac must be according to the load that must be controlled.
This circuit was found in Motorola documentation from 1966. The lamps are according to power and...
This circuit divides the grid 60 Hz frequency to obtain 20 Hz to drive mechanical watches used at...
We found this circuit in a Mullard manual from 1960. The transistor is a phototransistor of the...