This bargraph circuit was found in the January 1986 issue of Radio Electronics magazine. It is based on the well-known LM3914 and has two of them in cascade driving a good number of LEDs.
Found in the July 1970 Radio Electronics magazine, this circuit has an adjustable activation time...
This circuit was originally suggested in a 1968 publication to generate a white mark (frame) on a...
This circuit was found in a Signetics documentation from the 1980s. Next to the figure are the...