Sumida Components & Modules Gmbh

Vogt Electronic Components Gmbh

Herbert Jungwirth

Johann Winkler

Ernst Holzinger

Iyad Kebaisy

Norbert Ginglseder

Robert Ludwig

Christian Schmid

An apparatus for monitoring a magnetic core, wherein the apparatus provides a measurement winding which is magnetically coupled to the magnetic core to be monitored, a comparison inductance which is electrically connected in series with the winding and an electronic processing unit which is designed to determine the saturation behavior of the magnetic core to be monitored. The electronic processing unit is configured to record a first electrical signal occurring at the measurement winding and a second electrical signal occurring at the comparison inductance in response to an electrical measurement signal applied to the measurement winding, and to determine the saturation behavior of the magnetic core to be monitored on the basis of the first and second electrical signals. This makes it possible to easily monitor the saturation behavior of a magnetic core and to reliably detect the occurrence of saturation of the magnetic core.

Apparatus for monitoring a magnetic core and method for detecting a saturation behavior of a magnetic core to be monitored

The present invention relates to a choke with two coils and a core for interleaved applications in step-up or step-down circuits or power factor compensation circuits. The core comprises several core sections with several lateral legs and a middle leg, whereby the core is designed such, that a coupling factor k of the two coils is smaller than 3%-5%. Furthermore, the core is designed such, that the core section form two loops with the middle leg as a common section, whereby each of the two coils lies on different loops outside of the common section. The lateral legs have a cross section Aand the middle leg for the common section has a cross section A&#x3c;2&#xd7;A

Choke and choke core

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Hauzenberg, Germany

Herbert Jungwirth