A coil (the armature) rotates between the poles of an electromagnet (the field magnet) causing a current to flow in the armature.
Former name for generator.
Machine that produces electrical energy from mechanical energy, as opposed to an electric motor, which does the opposite. A simple generator (dynamo) consists of a wire-wound coil (armature) that is rotated between the poles of a permanent magnet. The movement of the wire in the magnetic field induces a current in the coil by electromagnetic induction, which can be fed by means of a commutator as a continuous direct current into an external circuit. Slip rings instead of a commutator produce an alternating current, when the generator is called an alternator.
1. A device that converts mechanical energy into electrical energy by electromagnetic induction.
2. Someone who originates or causes or initiates something; SYN. source, author.
3. An electronic device for producing a signal voltage.
4. An apparatus that produces a vapor or gas.
Building where electrical energy is generated from a fuel or from another form of energy. Fuels used include fossil fuels such as coal, gas, and oil, and the nuclear fuel uranium. Renewable sources of energy include gravitational potential energy, used to produce hydroelectric power, and wind power.
The energy supply is used to turn turbines either directly by means of water or wind pressure, or indirectly by steam pressure, steam being generated by burning fossil fuels or from the heat released by the fission of uranium nuclei. The turbines in their turn spin alternators, which generate electricity at very high voltage.
1. A highly energetic and indefatigable person; SYN. human dynamo, ball of fire, fireball.
2. A team considered to be the best of its class.