Bill Dull

President of Triad Magnetics. Bill Dull stands tall as a luminary in the power magnetics realm, boasting a remarkable track record of over 40 years within the industry. His background encompasses leadership roles within the North American divisions of prominent Japanese, Chinese, and Taiwanese companies, affording him unparalleled expertise in navigating the global market. Dull's forte lies in leveraging his key business acumen and robust marketing prowess within the dynamic magnetics landscape. Over the past two decades, serving as the president of Triad Magnetics, Dull has adeptly managed a diverse portfolio comprising standard power transformers, inductors, and power supplies. Furthermore, under his guidance, Triad’s U.S. Design Center in Perris, Calif., has thrived as a hub renowned for providing comprehensive custom design services.
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Recent Posts

Transformers and Inductors for Electric Vehicles and Charging

Posted by Bill Dull | March 13, 2024 | 0 Comments

Electric cars are increasingly becoming popular due to their efficiency and smart features. Sophisticated infotainment features and improved safety capabilities, such as autonomous driving and advanced driver-assisted systems, are fueling the demand for higher quantities of increasingly complex onboard electronic control units (ECUs). To function optimally, these circuits require automotive [...]

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Impedance vs DCR: What Is The Difference?

Posted by Bill Dull | March 12, 2024 | 0 Comments

Impedance and resistance are similar ideas that both represent how a component fights against the flow of current. Since they both use ohms as units, there can often be some confusion about their differences. In general, DCR, or DC resistance, is a value that represents the amount of resistance any circuit or device can offer when a DC signal of 0 Hz passes through it, while impedance describes [...]

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UL Listed vs. UL Recognized: What's the Difference?

Posted by Bill Dull | March 5, 2024 | 0 Comments

Underwriters Laboratories (UL) is a globally recognized standards company that works to establish safety guidelines and industry standards for the design, production, and marketing of a wide variety of products and components worldwide, with a particular focus on products manufactured and disseminated in North America. UL is dedicated to the development of more secure and sustainable products [...]

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How Losses Affect Your Transformers’ Performance

Posted by Bill Dull | February 27, 2024 | 0 Comments

Transformers experience losses due to the electrical current flowing through the coils and the alternating magnetic field in the core. The losses associated with the coils are known as conduction losses, while the losses arising in the core are referred to as core losses. Conduction losses occur due to the resistance of the coil wire, causing some of the electrical energy to convert into heat [...]

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An Introduction to Impedance Matching Transformers

Posted by Bill Dull | February 15, 2024 | 0 Comments

In order to keep your audio equipment running smoothly, avoid unplanned downtime, and properly maintain equipment, you need to first ensure that your electrical systems are in check and free of common problems. Electrical impedance, in particular, can hinder the performance of your equipment and cause major, system wide issues.

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UL Certification Vs. ETL Certification

Posted by Bill Dull | February 8, 2024 | 0 Comments

Some companies boast their UL listing while others hold up their ETL listing. Yet others, such as Triad Magnetics, carry both UL and ETL certification, varying depending on the particular products.

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What Are Electrical Transformers?

Posted by Bill Dull | February 1, 2024 | 0 Comments

Transformers are electrical devices with the capacity to change the voltage level of an alternating current (AC) in a circuit. They function only with AC circuits, not with direct current (DC) circuits. The basic components of a transformer are two separate coils of wire wound around a single core. The coil connected to the incoming or voltage source is the primary coil, the coil connected to [...]

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Isolation Transformers for Medical Applications

Posted by Bill Dull | January 24, 2024 | 0 Comments

Managing power for hospital equipment and devices is critical for the continued care and well-being of patients. Essential equipment should be isolated from the power source to protect it from disruption or interference. Most hospitals require that diagnostic and therapeutic equipment used in any medical applications be fully isolated with medical-grade electrical components called isolation [...]

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What Is a Toroidal Power Transformer?

Posted by Bill Dull | January 19, 2024 | 0 Comments

Transformers are devices used to transfer power between two parts of an electrical circuit, creating isolation while varying current and voltage. Transformers serve as integral components in most electrical systems.

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Understanding the Maximum Power Theorem

Posted by Bill Dull | January 12, 2024 | 0 Comments

The maximum power theorem, better known as the maximum power transfer theorem, is an essential tool for ensuring successful system design. Put simply, this theorem states that the maximum power that can be transferred from source to load is 50%, which occurs when source impedance is exactly matched to load impedance. The theorem is not as simple as it seems at first glance, however, and can be [...]

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