Dielectric induction current

Mains-borne Interference. When welding equipment is being used there is a possibility that both fundamental and harmonic currents might flow back into the mains electricity supply however, this can be a more serious problem at the frequencies used for induction heating as distinct from those for dielectric welding. 

Induction heating systems, skin effect heating, dielectric heating or systems with a current passing through a liquid, an enclosure or pipework are not within the scope of increased safety. However, resistance heating devices... 

These four vector relations compactly summarize the experimental laws describing all known electrical and magnetic phenomena. In these expressions, p is the electric charge density, J, the current density, E, the electric field and B, the magnetic induction. Maxwell s equations in free space (in the absence of dielectric or magnetic media) can be written... 

Figure 14.5 (a) Apparatus for measuring the dielectric constant of a material L is the inductance of the coil, h) The actual response of a nonideal dielectric to an applied voltage is such that the angle between the current and voltage is not 7t/2, but 7t/2 — (c) Equiva-... 

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