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The solid electrolytic capacitor structure (1) has been investigated for high purity aluminum utilizing both wire and porous anodes. The major problem with aluminum anodes is that a normal anodically formed aluminum oxide is extensively damaged during the high temperature decomposition (300-500°C) of aqueous solutions of manganese nitrate in the formation of manganese dioxide, the semiconductor cathode...
As part of a general investigation of insulating oils, a study was made of the effect that different types of additives have on the dielectric strength of mineral oil and oil impregnated paper capacitors. The additives were chosen from a group of compounds having known effects on the gassing of oils under a.c. voltage and on the d.c. life of capacitors.
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