This circuit was found in the 1990 Motorola Dataar Linear. We can mount it with more modern equivalent transistors. Output transistors shall be provided with heat radiators.
This method of controlling the sensitivity of a phototransistor was found in an Electronics Now from the...
September 2017 - Würth Elektronik High Power Ultraviolet LEDs can be obtained from Mouser...
We found this circuit in an Electronic Design. The main integrated circuit is the 4017. The...