This dual-LED circuit indicates three signal levels. It was found in the January 1996 issue of Electronics Now magazine. The integrated circuit may be an LM339 or another comparator.
We found this circuit in a documentation on active filters from 1977. The gain of this circuit is...
The touch sensor of this circuit consists of a single plate that must be touched to obtain an...
The integrated circuit used in this project is not common today, as it was obtained in the Linear...