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 timer was found in the Texas Instruments 1996 linear applications manual. The relay must be...
This circuit compares two light intensities, providing the indication on an analog instrument. The...
This circuit was obtained in a 1983 publication. It is a 1-transistor voltmeter, capable of...