Found in an Electronic Design from the 90s, this circuit generates a mathematical function given by the formulas next to the diagram. The basic component is from the period.
This circuit was found in a 1965’s General Electric documentation. It is intended for low voltage...
This protective circuit for power lines was found in a Radio Electronics from November 1957. The...
Found in the March 1974 Radio Electronics magazine, this circuit is designed to measure the level...