This circuit was found in a Radio Electronics magazine from November 1972. The circuit is based on an integrated circuit of the time and the current is 1 A and is adjusted with a potentiometer.
We found this circuit in an old 1980s documentation. The circuit can be implemented with modern...
This circuit is from a Linear datasheet. The circuit provides a 5 m voltage with 40 mA from an AA...
The components of this filter are calculated using conventional formulas (see mathematics section of...