We found this circuit in an article that describes several alarms that are in the sequence in our section. The article is from the Radio Electronics magazine of May 1971.
Operatives used in this 80's configuration are not common today, but it is valid for modern...
This circuit, which we find in a documentation from the 70s, filters out the Ru [occurring in...
With this circuit, three LEDs of different colors can be controlled sequentially. Adjustments of...