Magnetic Core Coating Comparison: Epoxy, Parylene, Silicone & Heat-Shrink
How to choose the right coating for magnetic cores—electrical insulation, environmental protection, and winding compatibility Introduction Magnetic cores are sharp, brittle, and often conductive. Bare cores don’t last long: wire cuts on edges, iron cores rust, dust contaminates. Every magnetic core is coated before winding—but not all coatings are equal. Shaanxi SiRui Technology Co., Ltd. […]
Industrial SMPS Magnetic Design Guide: Inductors, Transformers & Cores
How to select and design magnetic components for industrial AC/DC power supplies and DC/DC converters Introduction Industrial switch-mode power supplies (SMPS) must operate 24/7 for 10+ years, withstand wide temperature ranges, and meet stricter EMC and safety standards. At the heart of every industrial SMPS are magnetic components—boost PFC inductors, main transformers, output filter inductors, […]
Toroidal Core Winding Guide: Techniques, Calculations & Best Practices
How to wind toroidal cores for inductors, transformers, and current transformers—from hand winding to automated machines Introduction Toroidal cores are the most widely used magnetic core shape—found in inductors, transformers, common mode chokes, current transformers, and EMI filters. Done right, a toroidal winding gives you low leakage flux, high efficiency, and compact size. Done wrong, […]
Inductor Saturation and DC Bias: A Deep Dive for Power Designers
Understanding why inductors saturate, how core material affects DC bias performance, and design strategies to avoid saturation failure Introduction Inductor saturation is one of the most common—and most damaging—power supply design mistakes. A saturated inductor doesn’t just lose inductance; it can cause catastrophic failure: output voltage spikes, overcurrent, MOSFET destruction, and even fire. Shaanxi SiRui […]
EMI Filter Design Guide: Magnetic Components for Conducted EMI Suppression
How to design input filters with common mode chokes, differential mode inductors, and magnetic cores to meet EMC standards Introduction Every piece of electronic equipment that plugs into the grid must meet EMC standards. At the heart of every EMC-compliant product is the EMI input filter—and at the heart of every EMI filter is magnetic […]
Current Transformer Design Guide: Core Selection, Types & Applications
How to choose magnetic cores for current transformers in power metering, protection, and monitoring applications Introduction Current transformers (CTs) are the workhorses of electrical measurement and protection. From utility grid metering to industrial power monitoring to EV charging station current sensing, CTs provide isolated, accurate current measurement—without breaking the circuit. The magnetic core is the […]
EV Charger Magnetic Components Design Guide: On-Board, Station & V2G
How to select inductors, transformers, and common mode chokes for AC chargers, DC fast chargers, and vehicle-to-grid systems Introduction The global EV market is accelerating. Behind every charging station is a complex power conversion system, and at the heart of that system are magnetic components. Whether it is a 7 kW home AC charger, a […]
Pulse Transformer Design Guide: Core Selection, Applications & Magnetics
How to choose magnetic cores for pulse transformers in Ethernet, industrial control, and high-speed communication systems Introduction Pulse transformers are everywhere in modern electronics—yet they’re often overlooked. Whether it’s Ethernet PHY isolation, CAN bus interfaces, gate drive circuits, or digital signal isolation, pulse transformers transfer fast digital pulses while providing galvanic isolation. Shaanxi SiRui Technology […]
Solar Inverter Magnetic Design: Inductors, Transformers & Cores for PV Systems
Deep dive into magnetic component design for string inverters, microinverters, and battery storage converters Introduction The global solar market continues its explosive growth. At the heart of every solar installation is the inverter, which converts DC from PV panels into grid-compliant AC. The inductors, transformers, and common mode chokes inside a solar inverter directly determine […]
High-Frequency Transformer Design Guide: Core Selection, Topologies & Applications
How to choose magnetic cores and design high-frequency transformers for EV chargers, solar inverters, industrial power supplies and DC-DC converters Introduction The high-frequency transformer is the heart of every isolated power converter. Whether you’re designing a 3 kW EV on-board charger, a 100 kW solar string inverter, or a 48V server bus converter, the transformer […]