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 two stage transistor amplifier circuit using RC coupling in a magazine published in...
With a touch of S1 this circuit keeps a small strand of nichrome warm enough to light a cigarette....
August 2016 - It can be obtained from Mouser Electronics the new temperature and humidity sensors from...