This 5-range current measurement circuit was found in the September 1989 issue of Radio Electronics magazine. It uses an AC/DC converter.
This amplifier is from a 1973’s Japanese magazine. The transistors are of the time and the power...
July 2017 - Mouser Electronics already has Ricoh's new RP118x ultra-low current regulators in...
This one-transistor alarm can be used with much more sensors than the two shown by the figure....