This circuit only works with incandescent lamps and the frequency is adjusted in the pot, depending also on the capacitor. The triac must be equipped with a heat sink. The circuit is from an 80s manual.
We found this circuit in the March 1980 Radio Electronics magazine. The circuit used is the HA2400...
This simple circuit can be used in a robot that follows the light directly feeding a small motor....
This circuit was found in a telecommunications publication of 1978. Its purpose is to obtain...