This circuit is an improved version of the previous ones with the LM3914. We found it in the March 1992 issue of Radio Electronics magazine.
The circuit shown in the figure is suggested by Maxim (www.maxim-ic.com) and makes use of the...
We found this circuit in a Radio Electronics magazine from January 1975. The transistors are...
Found in documentation from the 1980s, this circuit can have several adaptations to use modern...