Main Page | See live article | Alphabetical index In engineering, it is a device which has the function of maintaining a designated characteristic. It preforms the activity of managing or maintaining a range of value in a machine. Th measurable property of a device is managed closely by specified conditions or an advance set value or it can be a variable according to a predetermined arrangement scheme. It can be used generally to connote any set of various controls or devices for regulating or controlling items or objects. Eamples are a voltage regulator (which is a transformer whose voltage ratio of transformation can be adjusted) and a fuel regulator (which controls the supply of fuel) In social science, it is an official responsible for control and supervision of an activity or area of public interest. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.