Showing papers on "Tantalum capacitor published in 1970"
Patent•
30 Apr 1970
TL;DR: In this paper, a composite dielectric is used to obtain the benefits of a high Dielectric constant and the self-healing properties of an electrolytic capacitor, and an aluminum anode is then inserted into an electrolyte so as to anodize any portions of the aluminum remaining exposed after coating with the titanium dioxide due to defects in the coating.
Abstract: An electrolytic capacitor structure and a method for making such a capacitor wherein a composite dielectric is utilized so as to obtain the benefits of a high dielectric constant and the ''''self-healing'''' properties of an electrolytic capacitor. An aluminum anode is coated with a dielectric layer of titanium dioxide. The coated aluminum anode is then inserted into an electrolyte so as to anodize any portions of the aluminum remaining exposed after coating with the titanium dioxide due to defects in the coating.
6 citations
Patent•
23 Jul 1970TL;DR: A nonpolar solid electrolytic capacitor comprises two facing electrodes of film-forming metal having a dielectric film on the surface thereof and a semiconductive oxide covering the dielectrics film and positioned between the electrodes as discussed by the authors.
Abstract: A nonpolar solid electrolytic capacitor comprises two facing electrodes of film-forming metal having a dielectric film on the surface thereof and a semiconductive oxide covering the dielectric film and positioned between the electrodes. The electrodes may be of tantalum or similar film-forming metals. The dielectric may be an oxide of the metal and the semiconductor may be manganese dioxide, lead oxide or similar metal. The method of preparation is described.
6 citations
Patent•
23 Oct 1970
TL;DR: An electrolytic capacitor suitable for operating at high voltages is produced by combining a glycol-borate electrolyte together with N-methyl pyrrolidone and a moderately hydrogenbonding solvent as discussed by the authors.
Abstract: An electrolytic capacitor suitable for operating at high voltages is produced by combining a glycol-borate electrolyte together with N-methyl pyrrolidone and a moderately hydrogenbonding solvent. The electrolytic capacitor has a wide range of temperature conditions, operates at high voltages and retains stable electrical characteristics at these levels.
5 citations
01 Aug 1970
TL;DR: In this article, a transmission line treatment has been used to explain the variation of capacitance and dissipation factor of cylindrical porous-anode bodies as a function of frequency due to the distributed resistance of the electrolyte within the pores.
Abstract: A transmission-line treatment has been used to explain the variation of capacitance and dissipation factor of cylindrical porous-anode bodies as a function of frequency due to the distributed resistance of the electrolyte within the pores. A correction has been determined to account for the effect of the ends of the cylindrical body. An effective resistivity is determined from experimental results which is a function of rhe volume of either the solid or liquid electrolyte and is also a function of the proportion of closed pores. A packed-sphere model is used to indicate the effect of the mean metal-particle size. The theory is applied to experimental results on a tantalum electrolytic capacitor.
4 citations
01 Apr 1970
TL;DR: In this article, failure analysis techniques for solid tantalum capacitors have been developed and detailed studies have resulted in an increased understanding of manganese dioxide integrity and the silver paint-solder system.
Abstract: High volume production of sophisticated equipment combined with high reliability requirements, using Mil-Spec parts, has necessitated the development of comprehensive failure analysis techniques for solid tantalum capacitors. Detailed studies have resulted in an increased understanding of manganese dioxide integrity and the silver paint-solder system.
2 citations
Patent•
10 Sep 1970
TL;DR: In this article, a glass sheel is fused to connecting wires, and the inside can be filled with a gas to improve the performance of the capacitance, which can be used to improve its performance.
Abstract: The capacitor, consisting of sintered tantalum, a dielectric tantalum oxide, a semiconductor layer and a graphite or silver contacting layer, is housed in a glass sheel which is fused to connecting wires. The inside can be filled with a gas to improve the performance of the capacitor.
1 citations