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Auto Transformers Manufacturers and Suppliers

IQS Directory provides an extensive list of auto transformer manufacturers and suppliers. Utilize our website to review and source auto transformer manufactures with our easy-to-use features which allow you to locate auto transformer companies that will design, engineer, and manufacture auto transformers for your exact specifications. Our request for quote forms make it easy to connect with leading auto transformer manufacturers. View company profiles, website links, locations, phone number, product videos, customer reviews, product specific news articles and other production information. We are a leading manufacturer directory who will connect you with the right manufacturers whether you are looking for electrical transformers, auto transformer coils, or auto transformer alternatives.

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If you are looking for high quality auto transformers, then you've come to the right place! For nearly 80 years, we have provided just what our customers need when it comes to transformers. We take pride in what we do, and we strive to offer innovation, cost-savings, quality, and fast delivery times. Our goal is to make our customers smile each and every day.
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If you are looking for auto transformers, you do not need to look any further! We manufacture all transformers with the highest quality and safety standards. We test our transformers along the way so you can rest assured that our products will stand up to harsh rigors. Find out how we can help you today by visiting our website or giving us a call!
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Here at MCI, we specialize in custom transformers and electronic components. For over 50 years, we have supplied OEMs with custom magnetic solutions, including auto transformers, power transformers, and general purpose transformers. With our rapid proto-typing and project management services, we can get you your electronic solution quickly and efficiently. We provide the very best support to move your ideas through inception to post production.
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We do auto transformers and we do them well! For over 26 years, we have been providing an ever growing customer base worldwide with top of the line products that will last a lifetime. We have made it our mission that each and every one of our customers is treated like number one in order to keep you coming back to us for all of your needs. Visit our website today to learn more about what we may do for you!
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We inspire confidence in our customers. We inspire confidence because we design our auto transformers by professionals. We manufacture all products to meet the highest quality standards. We provide products that put our reputation and yours on the line that live up to the job. Let us help you today. Contact us by phone or visit our website!
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Industry Information

Auto Transformers

An auto transformer, also referred to as an autoformer, is a general term for an electrical transformer with one winding, as compared to more traditional two-winding transformers. Transformer windings are coils wrapped around a magnetic core. Since auto transformers have fewer windings and a smaller core, they are often used as alternatives to two-winding transformers such as isolation transformers, because they are often more efficient as well as being less-expensive and physically smaller.

Some typical applications of autotransformers include use as voltage regulators and speaker adapters as well as to simulate low line conditions for testing, interconnect systems and for impedance matching. While auto transformers have many advantages over two-winding transformers, 3 phase transformers are used in applications in which autotransformers are not appropriate. Such applications include controlling harmonic currents and providing a source of ground fault currents. Used in equipment such as motor starters, boosters and static balancers, auto transformers are often used in the automotive, commercial, power transmission, electronics, telecommunications and marine industries.

Auto transformers consist of a single winding and an input and output circuit. Common to both circuits, the winding has at minimum three electrical connection points that are referred to as taps. The voltage source and the load are both connected to two of the taps. One tap at the end of the winding serves as a common connection to the source and the load circuits. The lack of insulation between the input and output circuits is a disadvantage of auto transformers, because a failure of the winding could result in the full input voltage being applied to the output. There are many different types of auto transformers: zig zag transformers, step-up transformers, step-down transformers and variable autotransformers. Zig zag transformers are special-purpose transformers that are intended for use in providing earthing for ungrounded electrical systems. Step-down transformers convert higher voltages to lower voltages by having fewer secondary coil windings, while step-up transformers' higher number of secondary coil windings allow them to convert lower voltages to higher voltages. Variable autotransformers are only applicable for low voltage designs and are often referred to as variable AC transformers.



Auto Transformers
Auto Transformers
Auto Transformers - MCI Transformer Corporation
Auto Transformers - MCI Transformer Corporation






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