AC Power Supply Types and Styles

Determine the best AC power supply for your electric needs

Most AC power systems work by using an alternating current (AC). The power systems convert the voltage from AC so that it will power items in need of electricity. Aside from working with alternating currents, some power supplies carry direct current (DC). When a power supply can convert AC power to DC power, manufactures classify it as another category of power converter.

The best use for a power supply will depend upon the type of current that it carries. To help you determine the best AC power types and styles for your needs, you might want to consider the basic types for AC power supplies.

1. Start by learning about a single-phase AC power supply.

2. Learn about three-phase AC power supplies to determine whether they will work better for you than single-phase.

3. Convert AC to DC with an AC DC power supply.

 

Understand single-phase AC power sources

A single-phase AC power supply distributes AC for loads that vary in unison. Electricians will commonly use a single-phase power supply for lighting or heating needs. Most of these power supplies operate on a standard frequency of 50 or 60 Hz.
Try: All About Circuits provides an AC diagram of a single-phase power supply. The article covers information like the load, current and polarity. Chroma Systems Solutions provides a comparison between single-phase AC power supplies and other AC power supply types and styles.

Consider three-phase AC power connectors

A three-phase AC power supply utilizes a polyphase system to carry electricity. In this type of system, each wire carries an equal voltage of current. Electricians might use this type of power supply for large air conditioners or other large appliances.
Try: The 3 Phase Power Resource Site offers a variety of information on three-phase AC power supply products. Its resources cover topics like loads, converters and wire color coding. Wind Stuff Now provides AC diagrams for three-phase power supplies. It also provides information on the basics of three-phase power and covers two ways to wire an AC power supply.

Evaluate the benefits of switch mode and AC DC power supply

An AC to DC power supply, also known as an AC/DC power supply, allows you to convert alternating current to direct current. To convert the voltage, most AC/DC power supplies use a switch mode power supply (SMPS). AC to DC converters are only on type of SMPS. Other types of switch modes include DC to AC, also called an inverter; AC to AC, sometimes called a cycloconverter; and DC to DC.
Try: Lazar Rozenblast offers an informative tutorial on power supply design, covering AC to DC power supplies. The website also includes a link to help you determine which type of power supply you need. For more information on AC/DC power supplies, read the article by R.G.Keen on Geofex.com. It includes pictures to help you understand the topics covered in the guide.

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