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Planar E cores |
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| Planar magnetics offer an attractive alternative to conventional core shapes when low profile magnetic devices are required. Basically this is a construction method of inductive components with windings made of printed circuit tracks or copper stampings separated by insulating sheets or constructed with multi-layer circuit boards. These windings are placed between low-profile ferrite cores. Planar devices can be constructed in several ways. The closest to conventional devices is a stand-alone component to replace components on a mono-layer or any other circuit board. The height of a stand-alone component can be reduced by sinking the core through a slot in the mother board until its windings rest on the mother board. One step further is a hybrid type, where part of the windings are in the mother board while others are joined as a separate multi-layer circuit board. The mother board must have slots cut out to accept the ferrite core. The last version is achieved by total integration in a multi-layer mother board. This 23-page application/product note explains how Planar ferrite cores can improve your designs. A complete overview of available E cores and Accessories is given. |
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Erscheinungsdatum: July 1997
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