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.
Found in an English documentation from 1977, this circuit activates a relay when the input voltage...
This Colpitts crystal oscillator was found in an American publication for amateurs in the 1980s....
This multivibrator, whose frequency depends on the capacitors, was found in an Argentine...