Dear Dennis...
EN-Genius Network's Dennis Feucht answers your design
queries in his new Circuit Design Clinic!
May, 2009
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EN-Genius Network presents a new, interactive
analog design service to readers! Send us your design questions (with
relevant data; schematics in JPEG or GIF, please) for some free
engineering advice from EN-Genius Network's circuit
consultant, Dennis Feucht, on how you might solve a design problem or
improve circuit performance. Submissions may be edited for clarity or
brevity, and submitters and their email addresses will remain anonymous
(unless otherwise indicated). Please send your questions to Dennis here.
Powder-Iron and Ferrite Cores
by Dennis L Feucht
Two major categories of magnetic materials used in power electronics are ferrites and iron powder. To understand magnetics, design characteristics of the core materials must become familiar. This tutorial compares two half-inch ferrite and powder-iron cores by calculating numbers for major design quantities, to develop an intuition for when to use which of these materials. It includes a look at power density limitations of smaller cores.
...download complete article here (788 KB PDF)
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