What is dynamo?

  • (noun): Generator consisting of a coil (the armature) that rotates between the poles of an electromagnet (the field magnet) causing a current to flow in the armature.

Dynamo

A dynamo is an electrical generator that produces direct current with the use of a commutator. Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current alternator, and the rotary converter. Today, the simpler alternator dominates large scale power generation, for efficiency, reliability and cost reasons. A dynamo has the disadvantages of a mechanical commutator. Also, converting alternating to direct current using power rectification devices (vacuum tube or more recently solid state) is effective and usually economic.

Read more about Dynamo.

Some articles on dynamo:

Henry Wilde (engineer)
... He invented the dynamo-electric machine, or self-energising dynamo, an invention for which Werner von Siemens is more usually credited and, in fact, discovered independently ... The self-energising dynamo replaces the permanent magnets of previous designs with electro-magnets and in so doing achieved an enormous increase in power ...
MLS Cup 2007 - MLS Cup Playoffs - Houston Dynamo
... The Houston Dynamo, for the second consecutive year in the club's two-year history, won the Western Conference Championship ... The Dynamo advanced to a rematch against the Revolution, and the MLS Cup, for the second straight year ...
Third-brush Dynamo
... A third brush dynamo was a type of dynamo, an electrical generator, formerly used for battery charging on motor vehicles ... It was superseded, first by a two-brush dynamo equipped with an external voltage regulator, and later by an alternator ...
Dynamo - Modern Uses
... Dynamos still have some uses in low power applications, particularly where low voltage DC is required, since an alternator with a semiconductor rectifier can be ... Hand cranked dynamos are used in clockwork radios, hand powered flashlights, mobile phone rechargers, and other human powered equipment to recharge batteries ...
Bottle Dynamo
... A bottle dynamo or sidewall dynamo is a small electrical generator for bicycles employed to power a bicycle's lights — or to charge batteries for ... resemblance to bottles, these generators are also called sidewall dynamos because they operate using a roller placed on the sidewall of a bicycle tire ... When the bicycle is in motion and the dynamo roller is engaged, electricity is generated as the tire spins the roller ...