How to create a fuller range of permeabilities from the standard Sendust E-core range

How to create a fuller range of permeabilities from the standard Sendust E-core rangeAlthough powder cores are available in several standard permeabilities – including 14, 26, 40, 60, 75 and 90µ – with a variety of shapes and sizes from different producers, some applications may require a permeability that is in between the values of the standard range. Additional permeabilities can be achieved by adding an air gap between the two cores; however, this also has a negative impact of fringing flux and the related loses.

In this paper, we share how different permeability Sendust E-cores can be combined to create a much fuller range of permeabilities between the minimum 14µ and maximum 90µ without using an air gap or creating new materials.

We share an analytical method to calculate the new overall permeability of combined cores, an iterative procedure to calculate the required number of turns for such a mixed permeability choke, and demonstrate the approach and supporting analysis methods on an example of a combined choke design.

Download our free paper, or for more information or for support with your magnetic component, contact us today.

Custom shapes and sizes, limited only by the engineer’s imagination

Micrometals and Acal BFi. Micrometals are one of the world leaders in the production of high quality, low-cost iron-powder cores - offering an unrivalled customisation service.

lesen sie mehr

Finding the solution to challenging high-frequency requirements with established materials

Discover how your magnetic component designs and applications can benefit from carbonyl iron powder - Using a tried-and-tested material from a different sector.

lesen sie mehr

We put the power in your industrial application

Our portfolio covers every possible power supply scenario. From creating your own bespoke power supply with SynQor bricks, to flexible, user-configurable modular products from Excelsys, internal open-frame designs from SL Power to cost-effective, plug-and-play external supplies from Cincon, we put the power in your industrial application.

lesen sie mehr