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The term "electrical motor" refers simply to any device that uses electrical energy to produce mechanical energy. Generally, electric motors make use of magnetic fields and current-carrying conductors to get work done. Mechanical energy can also be turned into electrical energy by means of an exact reverse process.
All sorts of tools and machines use electric motors to accomplish the tasks for which they were designed. To name just some of these tools and machines, a variety of home and industrial-use fans, pumps, household appliances, power tools, yard equipment and even computer disk drives use electric motors.
An electric motor is usually powered by an external alternating current (AC) or direct current (DC) power source. That current isn't useful unless a motor converts it into a form of energy that's capable of performing work.
Being able to generate electricity on its own isn't a big benefit, because it's not usable without some additional help. In contrast, mechanical energy is extremely useful and can be put to work in many ways. It is this type of energy that allows someone to make a hole in the ground, unscrew an object or perform other mechanical tasks.
Ampere's Force Law, discovered in 1820, is the principle that governs electric motors. Basically, it states that mechanical energy can be created when an electrical current interacts with magnetic fields.
AC
AC stands for "alternating current." This version of an electric motor was discovered by Nikolai Tesla in 1882. He also referred to it as a "rotating magnetic field." The AC motor has two different parts to it. The first is the stationary 'stator' which has coils that get the alternating current which then produce the magnetic field that rotates. The other part of the AC motor is the rotor, which is attached by a shaft. The rotor gets its power and torque from the rotating magnetic field, thus producing power which can be used mechanically in power tools in the form of a drill, or in whatever task the device needs to accomplish.
Direct Current
Direct current ("DC") is a different type of electrical energy. DC electric motors produce usable mechanical energy by converting DC electric energy. Many DC electric motors, often called "brush motors," use a stationary magnet as the stator and a rotating armature as the rotor. The armature in this setup rotates because the stationary magnets in the stator repel and attract it, depending on its position.
Electric Motor Repairs
Electric motor repairs must be done properly. If a repair is made incorrectly, the motor could be dangerous to operate. Electric motors are, by their nature, intended to use electrical current. If electric motor repairs are not performed correctly, electric shock or even electrocution is a possibility. Unless you've been trained to perform these repairs properly, always have them done by a trained repair technician.
All sorts of tools and machines use electric motors to accomplish the tasks for which they were designed. To name just some of these tools and machines, a variety of home and industrial-use fans, pumps, household appliances, power tools, yard equipment and even computer disk drives use electric motors.
An electric motor is usually powered by an external alternating current (AC) or direct current (DC) power source. That current isn't useful unless a motor converts it into a form of energy that's capable of performing work.
Being able to generate electricity on its own isn't a big benefit, because it's not usable without some additional help. In contrast, mechanical energy is extremely useful and can be put to work in many ways. It is this type of energy that allows someone to make a hole in the ground, unscrew an object or perform other mechanical tasks.
Ampere's Force Law, discovered in 1820, is the principle that governs electric motors. Basically, it states that mechanical energy can be created when an electrical current interacts with magnetic fields.
AC
AC stands for "alternating current." This version of an electric motor was discovered by Nikolai Tesla in 1882. He also referred to it as a "rotating magnetic field." The AC motor has two different parts to it. The first is the stationary 'stator' which has coils that get the alternating current which then produce the magnetic field that rotates. The other part of the AC motor is the rotor, which is attached by a shaft. The rotor gets its power and torque from the rotating magnetic field, thus producing power which can be used mechanically in power tools in the form of a drill, or in whatever task the device needs to accomplish.
Direct Current
Direct current ("DC") is a different type of electrical energy. DC electric motors produce usable mechanical energy by converting DC electric energy. Many DC electric motors, often called "brush motors," use a stationary magnet as the stator and a rotating armature as the rotor. The armature in this setup rotates because the stationary magnets in the stator repel and attract it, depending on its position.
Electric Motor Repairs
Electric motor repairs must be done properly. If a repair is made incorrectly, the motor could be dangerous to operate. Electric motors are, by their nature, intended to use electrical current. If electric motor repairs are not performed correctly, electric shock or even electrocution is a possibility. Unless you've been trained to perform these repairs properly, always have them done by a trained repair technician.
About the Author:
Armando Balocco is Director of Delba Electrical, a large electrical manufacturer based in the East Rand, South Africa. They are an Electric Motor Supplier and offer Electric Motor Repairs.. Check here for free reprint license: Electric Motors Explained.
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