This circuit is from an October 1980 Radio Electronics magazine. The circuit indicates when the maximum voltage range set by the LM3914 exceeds its end.
This circuit is from an article in Radio Electronics magazine from August 1972. The circuit is...
Found in 1969 RCA documentation, this circuit maintains constant current in the filament of a lamp...
The integrated circuit used in this application is uncommon today. The circuit is from American...