The purpose of this circuit is to find two resistors with very close values for critical projects. The circuit was found in the November 1995 issue of Electronics Now magazine.
This circuit was found in a 1973 publication. The SCR may be the TIC106 and must use a heat sink,...
This circuit is from the time when slide projects were used. We find it in a 90's Wels’ Think...
This circuit was found in a Radio Electronics Constructor, English magazine of April 1976; The...