Active device

From Wikipedia, the free encyclopedia

Active devices are energy controllers, sometimes converting one form of energy to another: chemical, hydraulic, thermal energy, mechanical , nuclear, solar, etc, into electrical energy, driving electrical current around the circuit and hence delivering continuous energy to it.

[edit] Explanation

An electrical circuit consists of various components or devices or elements, which may be active or passive. All electrical devices which consume rather than produce energy are called passive devices, like resistors, inductors and capacitors.