This power step drains just 3.5 mA from the battery and can provide good playback on a 4-ohm speaker. The circuit is from an 80's documentation.
Found in the July 1993 Electronics Now magazine, this circuit provides an output voltage whose...
The astable multivibrator shown by figura 1 has a very low current drain and can be powered from 6...
This series LED circuit was found in the February 1992 issue of Radio Electronics magazine. The...