The effective utilization of power line and ground filters can solve complex EMI problems. Philip F. Keebler and Kermit O. Phipps, EPRI Electromagnetic Compatibility Laboratory, Knoxville, Tennnessee, USA INTRODUCTION With today’s increasing number of electromagnetic interference (EMI) problems, new types of solutions are needed to continue providing compatibility between … [Read more...]
The 2008 EMC Directory & Design Guide – online!
Click here for instant access to the 2008 EMC Directory & Design Guide, online version for instant access to dozens of new technical articles. … [Read more...]
Utilizing Overlooked Characteristics of Ferrites for Improved Printed Circuit Board EMI Suppression
ABSTRACT While nickel-zinc composition soft ferrites are routinely used for PCB EMI suppression, the consequences of DC and low frequency AC bias on a device's high frequency impedance has not been widely discussed in the EMC and magnetic component literature. Virtually all EMI suppression applications in DC and AC power filter circuits place two-terminal ferrites under … [Read more...]
Understanding Inductance in the Real-World
As soon as current flows through metal conductors, inductance exists. Bruce Archambeault, Ph.D. IBM Distinguished Engineer, IBM, Research Triangle Park, NC, USA The concept of inductance is one of the most misunderstood concepts in electrical engineering. Terms such as ‘self inductance’, ‘loop inductance’, ‘partial inductance’, ‘mutual inductance’ are used with little … [Read more...]
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