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Package-Compatible High-Density Nano-Scale Capacitors with Conformal Nano-Dielectrics
Published in James E. Morris, Krzysztof Iniewski, Nanoelectronic Device Applications Handbook, 2017
Himani Sharma, P. Markondeya Raj, Parthasarathi Chakraborti, Yushu Wang, Rao Tummala
The counter electrode used for these capacitors is usually a liquid electrolyte. Aluminum electrolytic capacitors are also designated as “wet” or “nonsolid” capacitors due to the use of liquid electrolyte as the cathode. The liquid has the advantage of filling the deep-etch structures or channels, thus optimally fitting into the anode structure and accessing the high-surface-area electrode. A conventional aluminum electrolytic capacitor thus consists of a wound capacitor element that is impregnated with a liquid electrolyte, connected to terminals, and sealed in a can. The element is composed of an anode foil, paper separators saturated with an electrolyte, and a cathode foil. These capacitors routinely offer capacitance values from 0.1 μF to 3 F and voltage ratings from 5 to 700 V.
An efficient charting scheme for multivariate categorical process with a sparse contingency table
Published in Journal of Quality Technology, 2021
Dongdong Xiang, Xiaolong Pu, Dong Ding, Wenjuan Liang
In this section, the proposed method is applied to an Aluminum Electrolytic Capacitor (AEC) manufacturing process. There are a lot of stages included in the process. We only consider the quality in the aging stage as an illustration. More details of this real application can be found in Li, Tsung, and Zou (2014). The ageing stage contains three most important quality characteristics: capacity (CAP), dissipation factor (DF), and leakage current (LC). Due to the high cost in obtaining the precise numerical values of products, each characteristic will only be evaluated as conforming or nonconforming according to its specification. Therefore, this process can be viewed as a multivariate binomial process with three two-level factors, and the saturated log-linear model can be written as where mijk is the expected count of each cell, and only take 1 or −1 because of the two levels of each factor.
Impact of Inductor Placement on DC Bus Capacitor of Adjustable Speed Drives under Non-Ideal Supply Voltage Conditions
Published in Electric Power Components and Systems, 2023
Seshadri Gopalan, Krishna Vasudevan, Dinesh Kumar
It is a known fact that the life of the capacitor is dominated by the CHF value [19]. The life (or useful life) of the aluminum electrolytic capacitor is determined by the ambient temperature, ripple current, and cooling methodology [19]. The procedure for an estimation of life [19] of the capacitor is given by the manufacturer. For a simple estimation procedure, the manufacturer provides a graph-based life estimation method.