This high-power flasher for incandescent signaling lamps was found in a 1980s General Electric documentation. The circuit has a photoelectric control and is powered by the 110V grid.
This circuit came out in a publication called Electronics Handbook of 1993. The circuit triggers an...
In the figure we have a simple timer with the 555 feeding a relay directly. The circuit is from...
We can implement this circuit from a 1994 publication using BC548 and BC558 transistors. The...