Johnson Electric Coil Company

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Antigo, WI  |  800-826-9741

At Johnson Electric Coil Company, we have been providing reliable solutions for electric transformers since 1934. Our commitment to quality and innovation has made us a trusted partner for businesses in various industries.
We offer a wide range of electric transformers that are designed to meet the specific needs of our customers. Our product line includes custom-designed transformers, isolation transformers, toroidal transformers, and control transformers. We use high-quality materials and advanced technology to ensure that our transformers are efficient, reliable, and long-lasting.
Our team of experienced engineers and designers is always ready to assist our customers in developing custom solutions tailored to their unique requirements. We provide design assistance, material selection guidance, and prototyping services to ensure that our customers' projects are successful.
At Johnson Electric Coil Company, we utilize the latest technologies and machinery to manufacture high-quality electric transformers with exceptional precision. Our production facilities are equipped with computer-aided design (CAD) and computer-aided manufacturing (CAM) software to handle projects of any size and complexity. We have the capabilities to manufacture electric transformers with a wide range of specifications, such as high voltage, high frequency, and high current.
We are committed to maintaining the highest quality standards and have implemented rigorous quality control measures at every stage of the manufacturing process. We are ISO 9001:2015 certified and use statistical process control (SPC) to monitor our processes and ensure that our products meet the highest standards.
At Johnson Electric Coil Company, we are dedicated to providing the best possible solutions for our customers' electric transformer needs. Whether you need a custom electric transformer, a high-precision component, or a large production run, we have the expertise, technology, and experience to deliver the results you need. Contact us today to learn more about our products and services and to see how we can help with your next project.

Electric Transformers Power Pages

Electric Transformers

Electric Transformers

Electric transformers are static electrical machines that transform electric power from one circuit to the other without changing the frequency. An electrical transformer can increase or decrease the voltage with...

Isolation Transformers

Isolation Transformers

An isolation transformer, just like typical transformers, is a non-moving device that transmits electrical energy from one circuit to another without requiring any physical contact. It works on the idea of magnetic...

Power Transformer

Power Transformer

Power transformers are electrical instruments used in transmitting electrical power from one circuit to another without changing the frequency. They operate by the principle of electromagnetic induction. They are used in transmitting electrical power between...

Three-Phase Transformers

Three-Phase Transformers

An electrical transformer is a passive machine that transfers electrical energy from one circuit to another using a magnetic flux to induce an electromotive force. Transformers are used to increase (step-up) or decrease (step-down) voltages without changing the frequency of the electric current...

Toroidal Transformers

Toroidal Transformers

A toroidal transformer is a type of electrical transformer constructed with a torus or donut-shaped core. Its primary and secondary windings are wound across the entire surface of the torus core separated by an insulating material...

Types of Electric Transformers

Types of Electric Transformers

Electronically operated equipment depends on power transformers to convert electrical currents into voltage. Current transformers store and transport energy through power lines and grids...

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