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.
The purpose of this circuit, which we find in a 1975 radio amateur publication, is to measure the...
We find the original circuit in a technical publication of 1978. Changing the components, such as...
This circuit was found in a 1958’s publication. It uses germanium transistor, availble that time....