L.1.8 Differentiating EMC ferrite ↔ inductor The terminology used in this handbook clearly distinguishes between inductors and EMC ferrites in regard to the quality of the inductor: EMC ferrites are based on Ni-Zn materials. This material has good...
C2.0 ELECTROSTATIC NON-POLARIZED CAPACITORS C2.1 CONSTRUCTIONAL SOLUTIONS The search for capacitance in small volumes has created a number of different solutions, each with its advantages and drawbacks. We shall try in this chapter to describe both methods and...
R 2 WIREWOUND RESISTORS R 2.1 GENERAL COMMENTS As the name indicates wirewound resistors consist of a resistive wire wound on a bobbin and supplied with a protective coating. Since the resistance wire never can serve as a...
R 1.11 VOLTAGE DEPENDENCE If we apply a voltage on a resistor, it’s resistance will drop slightly in certain types. Therefore, the resistance change is negative. The change per volt of applied voltage is called voltage coefficient, VC,...
L.1.7 Inductance L Not only magnetic materials possess a magnetic field, every current carrying conductor creates a magnetic field itself. Fig. 1.23: Magnetic fields of current carrying conductors Energy can be temporarily stored in the magnetic field. This...
L.1.6 Permeability μ Permeability describes an important effect in ferromagnetic materials. If a ferromagnetic material is placed in a magnetic field, it is observed that the magnetic flux becomes concentrated in this material. Analogous to electric resistance, the...
C1.6 CATEGORY CONCEPTS AND DERATING Recommendation for voltage derating means that the actual capacitor shall be used in the application at lower voltage than rated voltage. Derating is expressed usually by percentage of rated voltage that shall be...
C1.4 ENERGY CONTENTS / FORCE MANIFESTATIONS C 1.4.1 Energy contents The energy stored in a capacitor can be described as …………… C 1.4.2 Force action from electromagnetic fields Parallel current carrying conductors are surrounded by magnetic fields exerting...
L.1.5 Core materials and their losses Introducing solids into a magnetic field, their behaviour can be classified in three groups: diamagnetic materials paramagnetic materials ferromagnetic materials Diamagnetic and paramagnetic materials have a relative permeability close to one. They...
L.1.2 Magnetic induction B A potential is induced in a conductor loop if the magnetic field passing through the conductor loop changes with time. Featured Image Fig. 1.10: Experimental configuration for magnetic induction The surge in potential over...
