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.
This circuit was obtained in a 1977 Radio Handbook. The transistor is from the era and the coils...
We find this circuit in the 80's own component manual. The power supply should be from 4 to 30 V...
Obtained from a 1969 documentation, this circuit can operate at frequencies up to 500 Hz, counting up...