Using the LM3914 this unusual digital clock uses a Bargraph LED indicator. The LEDs are the segments of a 7-segment display. We found it in February 1980 Radio Electronics magazine.
This circuit is from the time when cars used contact breakers. This 80's version measures the dwell...
The basic idea of this circuit is to indicate the tolerance of a capacitor by reference to a...
This simple multitester tests continuity, semiconductors, leaks, and other common component...