ISSN:
1572-8838
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Electrical Engineering, Measurement and Control Technology
Notes:
Abstract The effects of applying voltages higher than the nominal voltageV N, for given periods of time, to miniature aluminium electrolytic capacitors has been investigated. The measurements of the current transients, theI–V characteristics, and the a.c. properties indicate that the main effect of subjecting the capacitors to the high voltages is an irreversible change in the capacitor dielectric characteristics as a consequence of a large increase in the resistance of the electrolyte and in the permanent leakage current through the anodic oxide. This current, very noticeable for voltages higher thanV N, is attributed to an electronic conduction mechanism in an avalanche regime. The measured dielectric parameters and their evolution after exposing the capacitors to stressed voltage conditions are interpreted in terms of an extension of McLean's equivalent circuit for an electrolytic capacitor.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00611253
