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http://dbpedia.org/ontology/abstract Dielectric absorption is the name given toDielectric 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, 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.echarge themselves" to dangerous voltages. , Die dielektrische Absorption (lateinisch aDie dielektrische Absorption (lateinisch absorbere „absaugen, aufsaugen“) beschreibt den Effekt eines Dielektrikums, im elektrischen Feld Relaxationseffekte im Zeitbereich von Sekunden und Minuten zu zeigen. In Kondensatoren zeigt sich der Effekt einerseits als eine nach dem Entladen (Kurzschließen) wiederkehrende Spannung im Kondensator (Nachladeeffekt) und in einem langsamen, oft über eine Zeit von mehreren Minuten, abnehmendem Leckstrom bei frisch angelegter konstanter Spannung. Besonders bei Elektrolytkondensatoren kann dieser Effekt beobachtet werden; hier kann er auch elektrochemische Ursachen haben. In Timern oder Sample-and-Hold-Schaltungen kann dies zu Fehlern führen. Der Nachladeeffekt kann bei Folienkondensatoren zu Gefahren führen, da die Spannung und die Energie lebensgefährlich sein können. Kondensatoren für höhere Nennspannungen werden daher stets kurzgeschlossen transportiert und gehandhabt. Die Bestimmung der dielektrischen Absorption von Kondensatoren ist im Standard MIL-C-19978 D beschrieben.ist im Standard MIL-C-19978 D beschrieben.
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rdfs:comment Die dielektrische Absorption (lateinisch aDie dielektrische Absorption (lateinisch absorbere „absaugen, aufsaugen“) beschreibt den Effekt eines Dielektrikums, im elektrischen Feld Relaxationseffekte im Zeitbereich von Sekunden und Minuten zu zeigen. In Timern oder Sample-and-Hold-Schaltungen kann dies zu Fehlern führen. Der Nachladeeffekt kann bei Folienkondensatoren zu Gefahren führen, da die Spannung und die Energie lebensgefährlich sein können. Kondensatoren für höhere Nennspannungen werden daher stets kurzgeschlossen transportiert und gehandhabt.zgeschlossen transportiert und gehandhabt. , Dielectric absorption is the name given toDielectric 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, 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, mo personnel. In order to prevent shocks, m
rdfs:label Dielectric absorption , Dielektrische Absorption
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