This 3-digit circuit was found in the 1992 special edition of the Radio Electronics Handbook. The circuit produces a standard voltage for bench testing.
This dual circuit was found in an 80s Siliconix documentation. The power source must be...
This version operates in the opposite way to the previous one, triggering when light falls on the...
May 2016 - It can be obtained from Mouser Electronics the new digital sensor HDC1080 precision...