Found in an EDN from the 90s, this regulator makes use of the integrated circuit of the time. The input can be from 8 to 20 V.
This very high input impedance circuit is suggested by Texas Instruments. The circuit can be...
We found this circuit in the August 1994 issue of Electronics Now magazine. The circuit is based on...
This bargraph circuit using LM3914 was found in the October 1980 Radio Electronics magazine. Note...