We found this circuit in a 1986 documentation. It uses only LEDs, batteries, resistors and the power supply which can consist of 4 batteries or a 9V battery. The basic circuit uses two-color LEDs.
September 2017 - Arduino Lucky Shield shields containing a 5 V OMRON-g6RL relay, a Everylight...
With the configuration shown in the figure, a common 12 V lamp lights up when light no longer...
This circuit is from the owner's manual of the integrated circuits used. The manual is old, which...