How Does The Dynamo Effect Work

A simple generator like this produces alternating current an electric current that periodically reverses.

How does the dynamo effect work. It rotates coils of metal wire the mechanical energy within a magnetic field to force the field to push on the electrons in the metal and vary its flux. In this dynamo mechanism fluid motion in the earth s outer core moves conducting material liquid iron across an already existing weak magnetic field and generates an electric current. When it moves up it will generate a current flowing one way. One simple example of a generator is the bicycle dynamo the dynamo has a wheel that touches the back tyre.

As the bicycle moves the wheel turns a magnet inside a coil. The dynamo effect is a geophysical theory that explains the origin of the earth s main magnetic field in terms of a self exciting or self sustaining dynamo. In physics the dynamo theory proposes a mechanism by which a celestial body such as earth or a star generates a magnetic field the dynamo theory describes the process through which a rotating convecting and electrically conducting fluid can maintain a magnetic field over astronomical time scales. A dynamo electric generator converts mechanical energy into electrical energy.

The dynamo s field coil iron core has a small amount of residual magnetism that allows a small current to be generated and fed via switch 2 to the field winding which increases the output still further and so on. Revolutionizing the generation of electricity dynamos are now used worldwide to power cars planes and ships. When it moves down the current flows the other way. Each side of the generator green or orange is either moving up or down.

A dynamo is an electrical generator that creates direct current using 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. When the dynamo is producing a high enough voltage switch 1 closes and battery charging starts. How does a generator work.