Single Phase Motors

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One industry that utilizes single phase motors is construction, which uses them to power essential building equipment such as electric power tools and portable lighting. Read More…

Single Phase Motors Single phase motors are a type of electric motor that operates on single phase electrical power, which is a power source in which all of the voltages of the power supply work in unison as a single unit, functioning to distribute alternating current (AC) power.

Leading Manufacturers

Mankato, MN  |  612-746-7624

At Electric Motor solutions, our goal is to provide the best motors and equipment to meet the needs of your application. Products include linear actuators, electric motors, speed reducers, custom motors, vacuum cleaner motors, AC motors, brushless controller/drives and more. Our extensive network of 1st class manufacturing partners allows us to offer time and money saving solutions.

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Electric Motor Solutions $$$

Stratham, NH  |  844-858-5030

We manufacture motors, motion control and rotating products for OEMs. The electric motors obtainable through us include AC motors, AC/DC motors, brushless DC motors, stepper motors. We can customize your motor choice via the motor windings, end caps and motor housings, cables and connectors.

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ElectroCraft, Inc. $$$

Warren, IL  |  866-745-2100

Carter Motor is a leading manufacturer of electric motors, like AC motors and DC motors, and we have 70 years of industrial motor experience. We have been around since 1932, and provide reliability, integrity and high-quality electric motor products. Call us today!

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Carter Motor Company $$$

Mauston, WI  |  888-467-8288

Dumore is a leading designer and manufacturer of DC motors, custom fractional horsepower motors, gear motors and universal electric motors. Our high-quality fractional horsepower motors are used in a variety of markets and applications. If you can’t find the motor you need, let us custom design to meet your specifications. We’ve been in business since 1913 and are still making the best in motors.

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Dumore Corporation $$$

Valencia, CA  |  888-467-8288

Our products serve many different industries including defense, industrial machinery, medical devices, marine, automotive, air traffic management as well as a broad variety of others! We strive to treat each and every customer as if they are number one in order to exceed customer expectations and to keep them coming back to us for all of their needs! To receive more information on what we may be able to do for you visit us on the web today to get started!

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Specialty Motors, Inc. $$$
placeholder image Electric Motor Solutions ElectroCraft, Inc. Carter Motor Company Dumore Corporation Specialty Motors, Inc.

Single phase electrical power works much like a three phase electric power, in which the voltages of the power supply can alternate between three different circuit conductors, except with the single it is on power supply providing the voltage. Therefore 3 phase motors are able to self-start and produce a rotating magnetic field by itself, whereas single phase motors require the use of an additional power supply in order to start and produce the magnetic field.

Single Phase General Purpose Motor Single Phase General Purpose Motor - Electric Motor Solutions

Three phase motors are more commonly found in industrial manufacturing applications; however, single phase motors are also utilized in a wide range of applications and industries including: residential, for use in household appliances such as dishwashers, washing machines, blenders, dryers and more; commercial, for use in equipment and parts such as fans, swimming pool pumps and air conditioners; industrial, in small workshops used to power smaller-horsepower (HP), lighter-duty machine tools such as gear motors; and aerospace, for use in smaller power, motion control applications.

Since single phase motors are incapable of producing a rotating magnetic field on their own, they require an external power supply in order to produce power and effectively convert electrical energy into mechanical energy. A common external power supply used to start single phase motors is an assembly of a combination of either a capacitor and an auxiliary winding, which is also known as a start switch and actually is a seconding winding in the motor itself.

Another combination could be that of a capacitor, an auxiliary stating winding and a centrifugal switch. Through the external power supply, an AC current is applied to the single phase motor. When the AC current is applied, both the start winding and the run winding function to produce magnetic fields. Of the two windings, the start winding has a much stronger current and as a result, a stronger magnetic field is created which causes the motor to begin rotation.

It is only when the motor reaches the point of about 80% of its rated speed that the centrifugal switch is activated and disconnects the start winding from the motor. Once the start winding is disconnected, the motor is able to main a strong enough rotating magnetic field that it is able to operate on its own without the external power supply.

Single Phase Motors Informational Video