The circuit was found in the February 1992 Radio Electronics magazine. The scale can be changed by changing R2 and R3.
This circuit shows how to use a fixed 5 V regulator on a variable 1 A source. The integrated...
This relay shield circuit for old computers was found in January 1983 Radio Electronics magazine. The...
This circuit was found in the 1989 Radio Electronics Experimenter edition. The circuit has the...