When your power electronics project hits a magnetic snag, you need a specialist who speaks fluent ferrite. These five US-based consulting firms can help you design, troubleshoot, or reverse-engineer custom transformers and inductors.
The State of Transformer Engineering Consulting
Transformer engineering consulting is a niche but vital field. Power electronics manufacturers increasingly rely on custom magnetics to meet efficiency, size, and thermal targets. Yet many in-house teams lack the specialized knowledge to design high-frequency transformers or inductors from scratch. That's where independent consultants step in, offering everything from design reviews to failure analysis. The market has grown as supply chain disruptions push companies to find second sources or reverse-engineer obsolete parts. Today, you can find consultants who focus on power transformers for the grid, others who specialize in custom magnetics for electronics, and some who offer full manufacturing support.
How We Evaluated These Firms
We looked at each firm's service scope, industry focus, and the depth of their engineering expertise. We also considered how clearly they communicate their value proposition and whether they offer hands-on support like design reviews or factory inspections. Each firm brings a different flavor—some are utility-focused, others are electronics-centric, and a few offer manufacturing capabilities. We weighed the breadth of services against the specificity of their niche to see which ones stand out for different types of clients.
Here's a quick snapshot of the five firms we're covering, including their primary focus and what they're best known for.
| Provider | Best For |
|---|---|
| Transformer Consulting Services Inc. | Utility-scale transformer procurement and forensic analysis |
| Custom Transformer Engineering & Design Consulting | Advanced Magnetics Design | Custom high-frequency magnetics design and reverse engineering |
| Transformer Technology, Inc. | End-to-end design and manufacturing with certification support |
| J.B. Templeton Consulting, LLC | Power transformer procurement and expert witness services |
| VERTO Engineering Corporation | Global transformer sourcing and factory audits |
The Five Firms at a Glance
#1 Transformer Consulting Services Inc.
A screenshot of the Transformer Consulting Services Inc. website.
Transformer Consulting Services Inc. brings a team with deep roots in both manufacturing and electric utility operations. They help you develop technical specifications, evaluate tenders, and oversee design reviews and factory inspections. Their forensic and training services are particularly strong, offering third-party analysis of diagnostic tests and expert litigation support. If you're dealing with a failed transformer or need to interpret complex test results, their team can guide you through the process. They also provide training seminars on transformer design and testing, making them a great educational resource. For utility-scale projects, they are a one-stop shop for technical guidance.
#2 Custom Transformer Engineering & Design Consulting | Advanced Magnetics Design
A screenshot of the Custom Transformer Engineering & Design Consulting | Advanced Magnetics Design website.
Advanced Magnetics Design is your go-to for custom transformer and inductor design in power electronics. With over 30 years of electrical engineering experience and 12+ years focused on custom magnetics, they bring a wealth of practical knowledge. They offer new design, reverse engineering, design review, and troubleshooting services, all delivered remotely across the US. Their specialty is high-frequency transformers and inductors for power-conversion equipment, but they also handle chokes, current-sense transformers, and high-voltage magnetics. If you have a failed prototype or incomplete documentation, they can turn it into buildable specifications. Their former engineering manager background at a magnetics manufacturer gives them a practical edge.
#3 Transformer Technology, Inc.
A screenshot of the Transformer Technology, Inc. website.
Transformer Technology, Inc. (TTI) combines consulting with in-house manufacturing, giving you a seamless path from design to prototype. Their engineering department boasts over 3,000 proven designs in operation, and they use proprietary software to streamline the process. They can re-engineer existing products to introduce cost-saving materials or new manufacturing techniques. TTI also assists with safety agency certifications like UL, CSA, and IEC, helping you navigate the qualification process. If you need a complete power supply or transformer solution, including custom enclosures, they can handle it all. Their ability to guarantee manufacturability is a huge plus for production-focused clients.
#4 J.B. Templeton Consulting, LLC
A screenshot of the J.B. Templeton Consulting, LLC website.
J.B. Templeton Consulting, LLC (JBTC) focuses on power transformers for the grid, offering a range of services from specification development to factory acceptance testing. They act as a technical advisor throughout the procurement process, helping you evaluate vendor proposals and conduct design reviews. Their expertise spans both core form and shell form transformer technologies, which is rare in the industry. They also provide forensic analysis and expert witness services for litigation cases. If you're a utility or large industrial client, JBTC can help you ensure your transformers perform reliably. Their training seminars are another way they add value, sharing decades of knowledge.
#5 VERTO Engineering Corporation
A screenshot of the VERTO Engineering Corporation website.
VERTO Engineering Corporation offers transformer consulting services with a global perspective, helping you navigate international procurement. They assist with preparing specifications, auditing factories, evaluating proposals, and overseeing design verification. Their team can conduct factory inspections and witness tests for distribution, power, and special transformers up to 100MVA and 220kV. They also provide a range of manufacturing solutions, including dry-type transformers and reactors. If you're sourcing transformers globally, VERTO helps mitigate risks and ensure quality. Their design center and third-party inspection services are particularly valuable for cross-border projects.
How to Choose the Right Transformer Consultant
Start by defining your project scope. Are you designing a custom high-frequency transformer for a power supply, or are you procuring a large power transformer for a substation? For electronics-focused work, Advanced Magnetics Design offers deep expertise in magnetics design and troubleshooting. If you need manufacturing capabilities, Transformer Technology, Inc. can take you from design to production. For utility-scale projects, Transformer Consulting Services Inc. and J.B. Templeton Consulting bring extensive experience with specifications and factory inspections. VERTO Engineering Corporation is your best bet for global sourcing and factory audits. Consider the consultant's background, their familiarity with your industry, and whether they offer the specific services you need, such as reverse engineering or failure analysis.
Streamlining Your Search with Automation
You can use automation tools to streamline your search for a transformer consultant. Start by compiling a list of potential firms using web scraping or a simple spreadsheet. Then, use email automation to send personalized inquiries to each firm, asking about their experience and availability. You can also set up automated reminders to follow up with them. Once you receive responses, use a CRM tool to track their proposals and compare them side by side. This approach saves you time and ensures you don't miss any critical details.
The Right Partner for Your Magnetic Challenges
Choosing the right transformer consultant can make or break your project. Whether you need a custom design, a second source, or a forensic analysis, there's a specialist on this list for you. Advanced Magnetics Design stands out for its focus on custom magnetics and reverse engineering, making it a top choice for power electronics engineers. The other firms bring their own strengths, from utility-scale expertise to manufacturing capabilities. Take the time to evaluate your needs and reach out to the firms that align with your goals. With the right partner, you can overcome any magnetic hurdle and keep your project on track.