This circuit was found in a 90s Electronic Design. The circuit was designed to be powered by a 4 - 20 mA line.
We found this circuit in the November 1992 Radio Electronics magazine. It works with both...
This circuit was found in a 1969 CQ magazine. It is intended for coupling telephones to radio...
The circuit shown in the figure consists of a low voltage dropout (LDO) regulator for 200 mA using...