This basic circuit showing the LM3914 “inside” was published in the October 1980 issue of Radio Electronics magazine. Note that R1 determines the brightness and that the power supply is 9 V.
The circuit shown in the figure was suggested by National Semiconductor in its 1994 Linear...
This circuit can be controlled by an LDR causing an LED to flash at a frequency given by C2. The...
This hybrid power supply circuit was found in the August 1997 issue of Electronics Now magazine. The...