Sunday, December 16, 2018

By Daniel Murray


Thomas Davenport was the first person to invent an electric motor that was powerful enough to be useful. This invention was done in the US in the state of Vermont in the year 1834. Michael Faraday and Joseph Henry were the other people that according to history, developed motion machines that operated on electromagnetic fields. The motors that these two individuals developed did not have adequate power for them to be useful for any human activity. When in search of Electric Motors Toronto should be given priority.

These motors by Henry and Faraday however, were major aids in the process of inventing the device by Davenport and even the ones being used currently. Commercially, the motor acquired its success several years later in 1873. There was however a variety of these devices already created by many different pioneering engineers before this time.

Both direct and alternating currents can be used to power an electric motor. Thus, these devices can be classified into DC and Ac motors. The DC varieties were developed first before AC models came into existence. Each type has its own advantages as well as disadvantages, but they both depend on the power of electromagnetic fields. Besides classification based on the time of electricity the device uses, there are other classifications as well.

Even though different types of motors are in existence, they basically have the same components. For instance, every motor has a stator. The stator is usually a magnet of some form. The magnet may be a permanent one or it may be an electromagnet, which is formed by winding insulated wires. How powerful the magnet is usually determines the strength of the device as well. In the case electromagnets, using more windings of insulated wire creates a more powerful magnet.

The rotor is the second component. Rotors sit at the center of the magnet. The magnetic field formed by the stator acts upon the rotor. The stator has an effect on the rotor such that it rotates it. This rotation is due to the attraction and repulsion of the poles of the rotor by the stator. The rotation takes place faster if the stator has a lot of power in it.

Beside the count of the wire windings, the amount of current passing through the electromagnet will also determine the motor strength. Increasing wire windings increases the magnetic field strength and this in turn creates more power in the motor for rotating the rotor. This whole set up is insulated to avoid any danger that the users may be exposed to by this device.

In most cases, copper wire is the one used to form the wire windings. Copper wire is preferred because it is a good conductor of electricity and heat. Also, thin copper wires are capable of transmitting higher amounts of electricity without failing. Aluminum wires can be used, but they have to be thicker so that they do not fail when electricity is passed through them.

A motor can burn out if it is made to operate for a very long time. This situation occurs when there is failure in the insulation encircling the wound wire. The failure creates contact between the wires. When contact occurs, there is a short in the wires, leading to the device burning out. A device that has burned out cannot function.




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