Best cooling efficiency is achieved with toroidal shape, because 100% of the magnetic core is completely surrounded by winding of material of high thermal conductivity like copper or aluminium wire. Please contact us for any free request and technical advice to review feasibility of toroidal winding technology for your inductors and transformers in your applications, […]

Toroidal lamination core: Optimises magnetic, electrical, thermal, and mechanical properties. Magnetic flux direction is always the same as rolling direction electrical steel. Does not use step-lap joint and holes. Burrs after cutting are negligible. Does not create extra loss in magnetic core material because it doesn’t damage the material. Very low leakage flux eliminates acoustic […]

Cut cores technology creates fringing flux and eddy current in coil and magnetic core. Inductor reaches sharp saturation level because of the discrete gap structure, requiring a lot of headroom in the design. Discrete air gap structure in magnetic cores increase significantly the acoustic noise.   Iron powder core with distributed air gap reduces fringing […]

E CORE FOIL, SOLID WIRE AND TOROIDAL INDUCTOR IMPEDANCES VS FREQUENCY expressed in dB DIFFERENTIAL MODE NOISE FOR DIFFERENT INDUCTORS EI and C cores create high parasitic capacitance inducing high frequency voltage oscillations. It increases electromagnetic interference and electrical stress for insulation and IGBT. Lower parasitic capacitance from toroidal coil decreases high frequency oscillations. The parasitic capacitance […]

EI and C cores create high parasitic capacitance everywhere which : Worsens the electric field environnement in coil, Increases leakage current between layers and wires, Creates partial discharge and corona effect, Requires more insulation everywhere, increasing cost and reducing cooling efficiency. All of them are aging factors that can damage components of an insulated system and IGBT. […]