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High‑voltage insulation systems are critical to the reliability of ignition coils, transformers, and stator windings. Two dominant techniques—epoxy encapsulation and varnish impregnation —offer distinct trade‑offs in durability, cost, and manufacturing complexity. Understanding these differences helps engineers and OEMs choose the right approach for performance and longevity.Durability and Electrical IntegrityEpoxy Encapsulation […]

If the player can hear it, it matters.Some engineers argue a transformer swap can’t change tone. Players know better. In guitar amps the steel, gap, copper, and winding geometry are tone controls—just hidden ones. Here are the reasons that Push-Pull (PP) and Single-Ended (SE) feel different, as well as three […]

When you look at a power system, the big stuff gets all the attention- the breakers, the massive power transformers, the switchgear. But tucked away in the metering cabinets and relay panels, there is a hero doing the quiet work of keeping the lights on and the equipment safe: the […]

Size plays a major role in transformer design, especially when it comes to efficiency, power rating and equipment lifespan. Balancing a compact transformer design with high voltage capacity is a crucial part of most equipment today. R-core transformers are one type of transformer core that achieves a good balance of […]

Transformers play a crucial role in power management across the globe, in every electrical system and electronic device. As systems for capturing renewable energy have made a firm stance globally, especially with growth, be it solar arrays or wind farms or another system, so too does the need for transformer […]

Inductors are everywhere — from phone chargers to data centers to EVs. But not all inductors are the same. The two main families are air-core (no magnetic material inside) and magnetic-core (using materials like ferrite or powdered iron). Each has trade-offs in size, efficiency, frequency, and cost. Here’s a practical […]

Most projects can live with a catalog or general transformer design, but some can’t. Tight noise limits, unusual envelopes, tough environments, or non-standard frequencies push you beyond “good enough.” That’s where a custom rather than general transformer design pays for itself—and where core material and lamination strategy (M6, M29, M50, […]

At Custom Magnetics, we specialize in designing and manufacturing high-voltage electronic transformers and coils, tailored for a range of precision applications across multiple industries. Unlike power transformers used in the power grid for voltage regulation, our high voltage transformers are specifically designed to meet the unique needs of applications where […]

At Custom Magnetics, we manufacture a variety of transformers for audio equipment and medical devices, where precision is crucial and unnecessary noise has to be reduced to ensure optimal performance. Typically, for applications like these, our customers require R-core transformers, a unique type of transformer designed to almost eliminate leakage […]