Factory Capability and Quality Update for Custom Magnetic Components
A look at the production base behind MiDEN magnetics: 500,000 pcs/day capacity, ISO9001:2015 quality management, in-house engineering and OEM/ODM sample support.
Technical Insights
Technical Insights for Magnetic Component Engineers
The Elexnova knowledge center for magnetic component engineering. Practical articles on inductors, high frequency transformers, EMI solutions, power supply design and industry applications - written for design engineers, sourcing teams and product managers who need to move from research to a working specification.
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Inductor technology, high frequency transformer design, EMI solutions, power supply design knowledge and application analysis. Filter by category or browse the full library.
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Common Mode Choke vs Differential Mode Choke: Selection Guide
Compare noise paths, magnetic structures and impedance behavior to decide when a common mode choke, a differential mode inductor or a combined filter stage is the right answer.
Common Mode Choke Working Principle for EMI Filter Solutions
How a common mode choke uses flux cancellation to block common mode noise while carrying load current, and which impedance, current and balance data should be checked before selection.
EMI Suppression in Power Electronics: How to Reduce EMI in Power Supply Designs
Reduce EMI in power electronics by separating noise modes, controlling switching loops and selecting magnetic components by impedance across frequency rather than inductance alone.
EMI Suppression Techniques in Power Supplies
Practical EMI suppression for power supplies using chokes, transformer construction, shielding, layout control and grounding, with the measurements engineers should request from a supplier.
How to Choose a Power Inductor for a DC-DC Converter
Ripple current, saturation current, thermal rise and DCR explained for buck, boost and buck-boost designs, plus the specification sheet a magnetics factory needs to quote accurately.
Toroidal vs Drum Core Inductors: Which Structure Fits Your Application?
Choose between toroidal and drum core structures by magnetic containment, manufacturability, cost, board space and the thermal demand of the application.
Choosing the Right Magnetic Core Material
Ferrite, iron powder, alloy powder and tape-wound cores compared by permeability, core loss, saturation behavior, temperature stability and cost for a given switching frequency.
Common Causes of Transformer Failure
Overheating, insulation breakdown, saturation, winding defects and mechanical stress are the usual failure routes in the field. Here is how each one is detected and prevented.
Custom Magnetic Components for Industrial Automation
Automation equipment needs rugged, low-noise magnetics for drives, PLC power stages and sensing circuits. See how custom designs are matched to those constraints.
Custom Transformer Manufacturing Process
From drawing review and bobbin or core selection to winding, impregnation, electrical testing and packing: what actually happens between an RFQ and a delivered custom transformer.
EMI Filter Design Basics for Industrial Electronics
Build an EMI filter stage from the noise path outward: separating common mode and differential mode noise, placing chokes and capacitors, controlling grounding and preparing for compliance testing.
High Frequency Transformer Design Guide
The design flow for high frequency transformers: turns ratio, core and bobbin selection, winding loss, insulation coordination and thermal review for switching power supplies.
How Common Mode Chokes Protect Communication Systems
Communication and data lines pick up common mode noise from cables, grounds and nearby power stages. Chokes, impedance balance and layout practice keep the signal path clean.
How High Frequency Transformers Improve Power Supply Efficiency
Higher switching frequency shrinks magnetics but shifts loss into core and winding. Learn how transformer material, structure and winding choices trade size against efficiency.
How to Reduce EMI in Switching Power Supplies
Source, path and victim: a structured way to reduce EMI in switching power supplies through layout discipline, snubbers, magnetic component choice, shielding and cable control.
How to Select a Power Inductor for DC-DC Converters
A step-by-step selection method for DC-DC power inductors: inductance from ripple current, saturation and thermal margin, DCR loss, shielding and the data a supplier needs for a fast quotation.
How to Select an Inductor Manufacturer
Supplier selection criteria for magnetic components: engineering response, sample capability, quality system, production capacity, compliance documents and long-term cost stability.
Inductor Applications in Renewable Energy Systems
Inductors in solar, wind, storage and charging equipment: current profiles, environmental demands and the specification details that decide whether magnetics survive 20 years in the field.
Inductor Testing and Quality Control
Inductance, DCR, saturation, hi-pot, temperature rise and visual inspection: the test plan that keeps inductor batches consistent from sample to mass production.
Industrial Applications of High Frequency Transformers
Where high frequency transformers do the work in industry: switch-mode supplies, welding, medical, telecom and motor drive auxiliaries, with selection notes for each application.
Magnetic Components for EV Charging Systems
AC and DC EV charger designs depend on PFC inductors, resonant transformers, common mode chokes and output filter magnetics. Review the selection priorities for each position.
Power Inductor Series for Solar Inverters
Solar inverter magnetics must handle high DC current, wide temperature swing and long service life. See how boost, MPPT and output filter inductors are specified.
RoHS and REACH Compliance for Magnetic Components
What RoHS, REACH and material declaration requests mean for inductors and transformers, and which documents buyers should collect before approving a magnetic component supplier.
Toroidal Inductors vs Drum Core Inductors
A structure-level comparison of toroidal and drum core inductors covering stray magnetic field, winding cost, mounting style, thermal behavior and typical application fit.
Understanding Saturation Current in Power Inductor Series
What saturation current, rated current and temperature rise really mean on a datasheet, and how much inductance roll-off a high current converter can tolerate before performance drops.
What Is the Difference Between a Power Inductor and a Common Mode Choke
Both are wound magnetic components, but current path, core behavior, saturation limits and selection criteria are different. Here is how to avoid mixing them up in a bill of materials.
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Four editorial tracks keep the content center organized for engineers, buyers and returning readers.
Technical Articles
Component selection, core material, winding, loss and reliability know-how for inductors, chokes and transformers.
18 articles →Applications
How magnetic components behave in solar, EV charging, industrial automation, telecom and power supply designs.
6 articles →Industry Trends
Sourcing, compliance, quality systems and supply chain topics that affect magnetic component projects.
2 articles →Company Updates
Factory capability, quality system, capacity and service updates from the MiDEN manufacturing team.
1 article →Get Technical Support
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