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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 [...]

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 [...]

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.

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.

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 [...]

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 [...]

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.

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 [...]

Noise and other electromagnetic interference (EMI) can pass through electronic equipment as a result of coupling, conductively, via the equipment wires. When this noise occurs on a single line, it adds to the carried signal and is referred to as differential mode noise.

At their most basic level, transformers consist of a primary and secondary winding situated around a magnetic core. Audio transformers are used to transmit sound signals from the primary to secondary winding with high accuracy and minimal distortion. Transformers are the most effective solution in many audio applications as they allow for electrical energy to be transferred from one circuit to [...]