Found in an old Popular Electronics this circuit appears in other variations on this site and in this section. It uses a 7-segment common anode LED display as an indicator.
We found this simple car fuse monitor circuit in a William Sheets. The LED lights up when the fuse...
We found this VU circuit with special effects in an LED array in a 1991 documentation. The circuit...
This circuit uses a common digital clock to activate a relay at a programmed time. The circuit takes...