This circuit is valid for other comparators of the same series. In this case, a lamp is excited, but an LED can be used in series with a resistor or other load. The transistor admits equivalent.
We found this circuit in a Japanese publication from the 60s. The transistors are made of...
Launched in 2017 the Microchip CL88020 is an LED driver optimized for 120 VAC input applications with an...
This circuit is from old documentation, using a component that cannot be found easily today. The...