This 80's Hands On Electronics circuit automatically switches from high light to low light when an oncoming car illuminates the sensor. The circuit is powered by the car's own battery.
We found this circuit in an old publication (1977) using common transistors at the time and now...
This circuit uses an operational that is not currently common. We found it in an old American...
Bis This two-transistor circuit was found in the January 1994 issue of Electronics Now magazine. The...