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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.
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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, and more.

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Electric Motor Solutions $$$

Stratham, NH  |  844-338-8114

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.

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ElectroCraft, Inc. $$$

Monroe, WI  |  608-325-9161

Since our inception in 1932, Carter Motor manufactures AC universal motors, small motors, DC universal motors, DC permanent magnet motors, DC shunt wound motors and gearmotors, and many others. All of our products are designed and assembled here in the USA. Our team is here to help you determine the best motor to fit your application and to ensure the process is efficient and stress-free. We are ISO 9001:2015 certified.

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Carter Motor Company $$$

Greenville, OH  |  937-548-2525

Ramco Electric Motors produces special electric motors used in military, industrial, and aerospace applications. Supplying OEMs with quality motor products, we build complete motors to custom designs and offer types such as DC brush-type motors, AC induction motors, fractional horse power motors, DC brushless motors, AC motors and motor assemblies. Call today! ISO9001:2000, AS9100:2004 certified.

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Ramco Electric Motors, Inc. $$$

Preston, CT  |  860-889-8476

Piela Electric, Inc.! Specialists in electric motor and pump service, repair, and replacement. You'll never be just a number with us. We blend technical excellence with the personal attention you expect. Serving our customers is our number one priority at Piela Electric, Inc. We make every effort to get you back on-line efficiently by our pick up and delivery policy and we guarantee all of our work for one year.

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Piela Electric, Inc. $$$

Titusville, FL  |  321-268-5500

Rex Engineering manufactures gear motors, AC motors and DC motors. We also specialize in sub-fractional HP motors and design all products to your custom specifications. We are focused on providing excellent customer service, quality workmanship, competitive pricing, and constant design improvements for more reliable and versatile products. Contact us today for more information.

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Rex Engineering Corp. $$$

Taunton, MA  |  650 524 8822

Maxon Precision Motors, Inc., manufactures small, high-quality, precision DC brush and brushless motors used in medical, semiconductor, test and measurement, robotics, and manufacturing applications, among others. These advanced motors range in size from 4 to 90 mm and are available up to 500 watts. maxon also offers an extensive selection of gearheads, encoders, tachometers, and control electronics to complement its family of motors.

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Maxon Precision Motors, Inc. $$$
placeholder image Electric Motor Solutions ElectroCraft, Inc. Carter Motor Company Ramco Electric Motors, Inc. Piela Electric, Inc. Rex Engineering Corp. Maxon Precision 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

 
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