This analog meter circuit was found in the September 1989 issue of Radio Electronics magazine. The source must be dual, and the table gives the resistors for the various scales.
This circuit was found in a 90s EDN. Its purpose is to increase the efficiency of operational...
This circuit is used to match a high impedance input source with a low impedance output device...
This is an improved version of the previous circuit also found in the December 1990 Radio...