The use of twisted pair cable for high speed LAN signalling necessitates the inclusion of transmit and receive magnetics to couple the transmission signal to and from the copper media. The choice of magnetics in a given implementation can have a significant effect on the integrity of the transmission signal. Several important factors must be considered when choosing the magnetics for FDDI twist...

This topic reveals, by means of magnetic field plots, many of the problems that occur in magnetic device structures, utilizing both conventional cores and planar cores. The understanding gained from field plots points the way to reducing leakage inductance and winding losses that can otherwise be prohibitive. The reader is referred to the Unitrode/TI Magnetics Design Handbook TI Literature No. ...

In this paper, complex operation of multiple-output flyback converters is explained in terms of the extended cantilever magnetics model. Analytical results are derived that can accurately predict steady-state cross-regulation properties of a converter with any number of outputs and with arbitrarily complex magnetics configuration. Two snubber configurations are considered: a passive voltage-cla...

The one-fluid visco-resistive MHD model provides a description of the dynamics of a charged fluid under the influence of an electromagnetic field. This model is strongly coupled, highly nonlinear, and characterized by physical mechanisms that span a wide range of interacting time scales. Solutions of this system can include very fast component time scales to slowly varying dynamical time scales...

In Figure 2, the shape is the same as Fig. I, but the axis labels and values have been changed. Figure 2 shows the characteristic of a specific core made from the material of Figure I. The flux density axis Magnetic Fundamentals: Units commonly used in magnetics design are given in Table I, along with conversion factors from the older CGS system to the SI system (sysfeme infernationalrationaliz...

A passivity-based controller, which takes into account saturation of the magnetic material in the main flux path of the induction motor, is developed to provide close tracking of time-varying speed and flux trajectories in the high magnetic saturation regions. The proposed passivity-based controller is experimentally verified. Also, a comparison between the controllers based on the saturated an...

Figure 1-1 Transformer Equivalent Circuit Introduction Experienced SwitchMode Power Supply designers know that SMPS success or failure depends heavily on the proper design and implementation of the magnetic components. Parasitic elements inherent in high frequency transformers or inductors cause a variety of circuit problems including: high losses, high voltage spikes necessitating snubbers or ...