Title of Document: RELIABILITY EVALUATION OF LIQUID AND POLYMER ALUMINUM ELECTROLYTIC CAPACITORS 45BAnshul Shrivastava, Doctor of Philosophy (Ph.D.), 2014 Directed By: Professor Michael Pecht, Department of Mechanical Engineering Liquid aluminum electrolytic capacitors are known for their reliability problems. They are considered as the weakest link in the power electronics system. The liquid e...

Electrolytic and metallized polypropylene film (MPPF) capacitors are among the most popular capacitors used in electronic equipments. The choice of capacitors is of major importance because one of the most frequent causes of the equipment breakdowns results from the failure of capacitors, and will therefore determine the overall lifetime of the system. Electrolytic capacitors present higher cap...

We present results on the development a new micro electromechanical parallel plate tunable capacitor with a wide tuning range. Different from conventional parallel plate tunable capacitors, this new tunable capacitor consists of one suspended movable top plate and two fixed plates. One fixed plate and the top plate form the variable capacitor, while the other, together with the top plate, is us...

The influence of 6 MeV electron irradiation on the electrical properties of Al/Al2O3/n-Si metal–oxide– semiconductor (MOS) capacitors has been investigated. Using rf magnetron sputtering deposition technique, Al/Al2O3/n-Si MOS capacitors were fabricated and such twelve capacitors were divided into four groups. The first group of MOS capacitors was not irradiated with 6 MeV electrons and treated...

Power distribution system noise affects computer product timing performance, signal integrity and electromagnetic interference. Between 1 MHz and 1 GHz, the primary means of reducing power distribution noise is with ceramic decoupling capacitors. To achieve a certain target impedance, it is important to characterize the ESR of ceramic decoupling capacitors as they directly determine the number ...

©ALLVIA, Inc. 2011 Sunnyvale, CA www.allvia.com Page 1 Interposers between ICs and package substrates that contain thin film capacitors have been used previously in order to improve circuit performance. However, with the interconnect inductance due to wire bonds being high, the benefits of thin film capacitors have not been fully realized. Replacing the wire bonds with Through Silicon Vias (TSV...

Abstract The authors are studying hardware neural networks (HNN) to control the locomotion of microrobot. chip is integrated circuit HNN. We proposed electrostatic motor that new actuator microrobot in our previous research. used waveform generator generate driving waveform. In this paper, will propose using chip. cell body model basic component outputs 3 MHz frequency electrical oscillated pul...

Power-on failure has been the prevalent failure mechanism for solid tantalum capacitors in decoupling applications. A surge step stress test (SSST) has been previously applied to identify the critical stress level of a capacitor batch to give some predictability to the power-on failure mechanism [1]. But SSST can also be viewed as an electrically destructive test under a time-varying stress (vo...

Controlling the speed of the Induction Motor is very essential in today’s industry. Conventionally Gear box is used for speed control which consumes more energy. This Paper presents the Modeling and Simulation of frequency converter used for speed control of asynchronous motor through digital approach which has high reliability and energy conservation by using MATLAB/ SimulinkTM. The Frequency ...