About Us

Company Profile

CTM’s patented inductor, filter, and packaging technology improves forced air and liquid cooled high power conversion systems.  We improve induction and PM motor drive efficiency, reliability, and packaging. Our low cost passive harmonic filters remove high power grid/generator harmonics to IEEE-519 standards.  CTM liquid cooled inductors and filters improve efficiency and size for utility scale renewables and energy storage systems.

When compared to conventional silicon-steel inductor products, CTM’s patented technology brings to this market:

  • 50% reduction in size
  • 50% reduction in weight
  • 50% reduction in power loss
  • 75% reduction in audible noise

Since 2006, CTM has placed over 200,000 units in the field filtering three phase power, with the industry’s highest product reliability. CTM Magnetics’ products serve the following primary markets:

  • Oil and Gas Harvesting
  • Utility Scale Renewables
  • VSD Controlled Chillers
  • Ship and Rail Transportation
  • Battery Energy Storage Systems
  • Active Filters
  • Active Front End (power factor correction) AC Drives

CTM Magnetics inductor and filter technology is protected by over 30 patents with over 500 claims with many more pending. At CTM Magnetics, innovation is highly valued; we engineer forward-thinking products that provide solutions to tomorrow’s power quality problems. Our company has a strategic plan to be the low cost producer in our market space; in order to meet these goals, over the last two years we have invested heavily in facilities, personnel, processes and equipment. Our current 60,000 sq. foot HQ facility is located on 5 acres in Tempe, Arizona, with a satellite facility of 20,000 sq. feet on 2 acres next door.

We have optimized our layout, workflow, and processes to support lean manufacturing techniques and 5S workstations. Our MRP software system manages and communicates all aspects of customer orders, supply chain, production, accounting, and documentation. Our product development team uses SolidWorks® 3D CAD software to develop all of our product lines and manufacturing documents, making communications with our customers seamless when trading 3D models of assemblies.

CTM Magnetics is committed to serving our partners who need the value our technology brings to these specialized three phase inductor and filter markets. We are driven to develop standard and custom products which deliver our value proposition of 50% reductions in size, weight, power loss and noise, with no additional cost.

Culture & Values

Mission Statement

We enable global energy conservation by utilizing our innovative power quality solutions to improve efficiency, reliability, and packaging in high power conversion systems.


Vision Statement

To be the default power quality solution by teaching the world to remove line frequency materials from high frequency applications.



INNOVATION: We value innovation through problem solving, thoughtful configuration, meeting customer need, experimentation, continuous improvement, differentiate, and growth.

RISK: We value and embrace risk. CTM leadership cultivates and supports calculated risk taking.

TRUST: We value and trust employees, customers, partners, and vendors. Cultivating trust takes a continuous commitment to honesty.

COMMUNICATION: We value a culture of open communication. Ideas come from customers, employees, and vendors.

PEOPLE: We value our people and the people they care about. We nurture positive attitudes and empower employees to succeed and grow. We value debate, positive disagreement, and differing opinions.

INTEGRITY: We value loyalty, honesty, and commitment to our customers and employees.

EFFICIENCY: We value efficiency in our products, manufacturing, operations, and people.

MENTORSHIP: We value mastery and embrace the bi-directional education component of learning from experienced peers.

Brand Promise

Small. Quiet. Efficient. Reliable.

Our History

CTM was founded in Arizona in 1976 by a Motorola engineer who wanted to design and build line and switching frequency transformers for Motorola. In 1981, the company was purchased by its current ownership.

During the 1980’s and 1990’s CTM Magnetics carved out a growing business in line and switching frequency custom engineered magnetics. Our products used standard components available to anyone during these years; however, our engineering skills, customer service, and quality production team helped build the business to a sustainable level where investment in innovation was possible. Our markets from 1980 through 2004 were medical electronics, professional audio, battery chargers, and some military products.

In 2004, our product development engineers accepted a project to design an inductor on the output of a three phase, 2 kHz variable speed drive delivering 480 V at 1,200 A to a motor. Through a trial and error design method, CTM engineering finally conceived of our first THISS Technology® filter inductor design. The new inductor technology performed brilliantly under the customer’s 1,200 A test, and CTM Magnetics applied for its first patent.

Since 2005, CTM developed substantial IP for THISS Technology® inductors and filters. During this time, CTM internally developed its technology, materials, manufacturing equipment, processes, systems, and controls, while externally building and growing its customer base, markets, and supply chain; these advances allowed CTM to produce its patented technology to a fundamentally new set of markets and customers.

CTM grew by over 300% during this time; it became clear that customers valued the following benefits of our patented inductor and filter technology:

  • 50% reduction in size
  • 50% reduction in weight
  • 50% reduction in power loss
  • 75% reduction in audible noise

Our patented THISS Technology® inductors and filters found frequent use in power quality applications on both sides of AC Drives or Inverters, where they were needed to remove harmonic frequencies and voltage spikes from the power line and drive caused by nonlinear loads introduced by power semiconductors.

Today, CTM delivers this large product value to some of the world’s largest companies in Oil and Gas Harvesting, Utility Scale Renewables, VSD Controlled Chillers, Ship and Rail Mass Transportation, Active Filters, and Active Front End AC Drives. We are delivering standard products to our target market space which bring high value with no cost increase. Additionally, we are investing in innovation, developing new filter inductor products for the power semiconductors of tomorrow. CTM is well positioned for growth with our new 5 acre, 60,000 square foot facility to add to our old 2 acre, 20,000 sq. foot site. We continue to invest in our future with people, equipment, and technology so that we can continue to deliver on our value proposition for many years to come.

Small / Quiet / Efficient / Reliable

Stop trying to make silicon steel "work"