We found this circuit in the June 1992 issue of Radio Electronics magazine. The sensor is a common diode. The circuit is powered by the power grid from a 12 V transformer.
This circuit was found in a Popular Electronics of the 90s. It operates a third brake light that...
September 2015 – It can be found at Mouser Electronics the new drivers of high voltage LEDs HV9805 from...
We found this circuit in documentation from the 1970s; The circuit uses Japanese transistors of...