This simple digital circuit tester can work with TTL technology when powered by 5 V and with CMOS when powered by voltages from 3 to 15 V. The circuit provides LED indications and uses current ICs.
This circuit keeps a flashing LED when a balcony lamp, for example, is turned off. As a result,...
We found this circuit for 330 MHz using PIC in the magazine Electronics Now of December 1994. The...
This circuit is from 1992 documentation. The operational circuit, which is uncommon nowadays, can...