Transcription of Members - Magnetics Group
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MMPA Soft Ferrite Division Members AVX (formerly Thompson-CSF Passive Components). Ceramic Magentics, Inc. CMI Technology, Inc. Fair-Rite Products Corp. Ferronics Incorporated Hitachi Metals America, Ltd. Magnetics /Div. Of Spang & Co. MMG-North America National Magnetics Group , Inc. Philips Advanced Ceramics Powdertech Corporation Siemens Passive Electronics Devices, Inc. Steward, Inc. TDK Corporation of America TSC Ferrite International Co. Copyright 0 1989, 1990, 1992, 1996, 1998. Magnetic Materials Producers Association All Rights Reserved TABLE OF CONTENTS. Page No. MMPA Overview ..4. 1. Introduction to Soft Ferrites ..5. 2. Processing ..6. 3. Process Control/Quality Assurance ..9. 4. Materials and Geometries ..lO. 5. Dimension Nomenclature for Soft Ferrite Cores ..17. 6. Calculation of Core Constants ..21. 7. Applications ..2 4. 8. Supplier/User Communication ..33. 9. Specifications and Test Conditions ..34. 7. Metric System (SI) Units ..38.
SECTION 1m INTRODUCTION TO SOFT FERRITES In the early days of the electrical industry, the need for magnetic materials was served by iron and its magnetic
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