Dielectric absorption is the name given to the effect by which a capacitor, that has been charged for a long time, discharges only incompletely when briefly discharged. Although an ideal capacitor would remain at zero volts after being discharged, real capacitors will develop a small voltage from time-delayed dipole discharging,[1] a phenomenon that is also called dielectric relaxation, "soakage", or "battery action". For some dielectrics, such as many polymer films, the resulting voltage may be less than 1–2% of the original voltage, but it can be as much as 15% for electrolytic capacitors. The voltage at the terminals generated by the dielectric absorption may possibly cause problems in the function of an electronic circuit or can be a safety risk to personnel. In order to prevent shocks, most very large capacitors are shipped with shorting wires that need to be removed before they are used and/or permanently connected bleeder resistors. When disconnected at one or both ends, DC high-voltage cables can also "recharge themselves" to dangerous voltages.
^"Modeling Dielectric Absorption in Capacitors, by Ken Kundert" (PDF).
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Dielectricabsorption is the name given to the effect by which a capacitor, that has been charged for a long time, discharges only incompletely when briefly...
from the capacitor itself, draining energy and stressing the dielectric. Dielectricabsorption occurs when a capacitor that has remained charged for a long...
discharging, a phenomenon that is also called dielectric relaxation, "soakage" or "battery action". Dielectricabsorption can cause a problem in circuits where...
Capacitors made with any type of dielectric material show some level of "dielectricabsorption" or "soakage". On discharging a capacitor and disconnecting it,...
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discharging, a phenomenon that is also called dielectric relaxation, "soakage" or "battery action". Dielectricabsorption may be a problem in circuits where very...
probability of photon absorption, which is directly related to the imaginary part of the optical dielectric function ε(ω). The optical dielectric function is given...
film as the dielectric, sometimes combined with paper as carrier of the electrodes. The dielectric films, depending on the desired dielectric strength,...
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discharging, a phenomenon that is also called dielectric relaxation, "soakage" or "battery action". Dielectricabsorption may be a problem in circuits using very...
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shorted, as protection from potentially dangerous voltages due to dielectricabsorption. Some old, large oil-filled capacitors contain polychlorinated biphenyls...
need not be perfectly linear, it does need to be time-invariant. Dielectricabsorption causes linearity errors. The basic design of the dual-slope integrating...
Dielectric-barrier discharge (DBD) is the electrical discharge between two electrodes separated by an insulating dielectric barrier. Originally called...
length, can be obtained at intervals. This effect is caused by dielectricabsorption. The Leyden jar is a high-voltage device; it is estimated that at...
and it may regain part of its charge through a process called "dielectricabsorption". In addition, some types of charging systems can be equally deadly...
which includes what are referred to as absorption centers. Many substances are selective in their absorption of white light frequencies. They absorb...
the dielectric interface, as well as using Snell's law to determine the angle of refraction. In addition Beer's law is used to determine absorption of...
Specific absorption rate (SAR) is a measure of the rate at which energy is absorbed per unit mass by a human body when exposed to a radio frequency (RF)...
property called dielectricabsorption, in which energy stored in the dielectric during use is released gradually over time through dielectric relaxation....
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