Step down power transformers are extremely popular with American expatriates who continue using American appliances, such as microwaves or vacuums, after moving to Europe or other foreign countries. However, step down transformers are most widely used in power transmission applications at power-generating stations to raise voltages with a corresponding decrease in current. Read More…
Leading Manufacturers
Johnson Electric Coil Company
Antigo, WI | 800-826-9741We believe in offering the very best to all customers. We offer a full range of transformers, including electric transformers, current, and toroidal transformers.
Triad Magnetics
Perris, CA | 951-277-0757With more than 500 current transformer manufacturers in the world, Triad Magnetics realizes you have a choice. Why choose Triad? Having served the needs of many industries for more than half a century, Triad believes its experience makes the difference. And if there is one point experience has taught it, it is that it must remain flexible and adaptable to the changing needs of the market.
Lenco Electronics, Inc.
McHenry, IL | 815-344-2900Lenco Electronics, Inc. specializes in a wide variety of custom electric transformers. Lenco’s success has not come about by accident, but by providing its customers with high-quality products.
Electronic Craftsmen
Waterloo, ON | 800-565-9118For over 60 years we have been designing magnetics for power electronics applications that are on the leading edge of innovation! Our electric transformers provide a long lasting value to stand up to the tests of time. We are committed to accurate pricing and to the quality and durability of our designs, including a COMPREHENSIVE 5-year Warranty. Visit our website or get in touch with us today to learn more about how we can help!
Gowanda Electronics, Inc.
Gowanda, NY | 716-532-2234Gowanda is a global supplier and manufacturer of electronic parts used in the defense, space, medical, railway, and industrial industries. We specialize in inductors, transformers, coils, and more. Our credibility stems from more than our AS9100, ISO9001, and ISO13485 certifications. We conduct in-house lab testing, invest in prototyping equipment, and maintain an expansive network of suppliers.
Step Down Transformers - Johnson Electric Coil CompanyVery high voltages and low currents are used for long-distance transmission lines in order to reduce power losses; as a result, at the receiving end step-down transformers reduce the voltage and increase the current to the lower residential or industrial voltage levels. Materials used to construct the coil windings include copper, special steel alloys, chromium, nickel and aluminum, of which copper windings are the most efficient as well as being a little more costly.
Sizes of step down transformers range from large devices intended for use in electrical power systems, such as power plants, to much smaller units that are used in electronic equipment such as loudspeakers in radios, high fidelity equipment and television sets.
Step Down Transformers - Johnson Electric Coil CompanyA step down transformer is comprised of two sets of coils or windings linked by a magnetic field. The core can be a ferrite compound or a laminated core wound with bare copper or enameled coils. The coils are primary and secondary and function as conductors. Although there is no connection between the two circuits, the coil windings are inductively linked.
The principal function of a step down transformer is to convert high voltage, low current power into low voltage, high current power. The conversion begins when the primary coil receives alternating current, or AC, voltage; this produces a varying magnetic field of voltage surrounding the conductor, and the magnetic field activates the secondary conductor coil. Once the voltage conversion is made, the energy is transferred to the load center and the electrical process continues from there.
The ratio of turns (also known as windings) in the primary coil to the number of turns in the secondary coil determines the magnitude of the voltage; in a step down transformer there will be fewer turns in its secondary coil than the primary. Even though there are fewer turns, the turns in the secondary coil are of a larger gauge wire than used in the primary coil in order to handle the increased current power that has been transferred to the secondary coil.
The voltage ratio between the windings of the primary and the secondary circuit mirrors the ratio of the number of windings. Correctly used, step down transformers can protect against safety hazards such as short-circuiting, blowing equipment or starting fires.
