2. A filter circuit is required to smooth the output voltage; there are several tradeoffs in filter-component selection.
This article discusses controlling a voltage regulator using a digital potentiometer with pushbutton controls, the DS1809, which give a “human interface” to the control of the voltage regulator. This ...
Small, resilient and easy to use, digital potentiometers are becoming widely accepted as replacements for mechanical potentiometers, especially in volume-control applications. In this type of audio ...