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.
This source, with slight variations, can be found in other articles in this section and on this...
We found this circuit in an old American documentation. Accuracy has 0.02% error and 0.003%...
This circuit is indicated for applications powered by 12 V sources. The battery is 12 V according to...