Circuit Component Packages

1992 ◽  
pp. 44-66
Author(s):  
Gerald L. Ginsberg
Keyword(s):  
Circuit Component

Consideration of Environmentally Assisted Fatigue in Austenitic Stainless Steel: Calculation and Practical Application

2012 ◽  
Author(s):  
Sven H. Reese ◽  
Johannes Seichter ◽  
Dietmar Klucke
Keyword(s):  
Primary Circuit ◽  
Stress And Strain ◽  
Loading Conditions ◽  
Practical Application ◽  
Circuit Component ◽  
Detailed Assessment ◽  
The Mean ◽  
Fatigue Evaluation ◽  
Assessment Procedures

The influence of LWR coolant environment to the lifetime of materials has been discussed recent years. Nowadays the consideration of environmentally assisted fatigue is under consideration in Codes and Standards like ASME and the German KTA Rules (e.g. Standard No. 3201.2 and Standard No. 3201.4) by means of so called attention thresholds. Basic calculation procedures in terms of quantifying the influence of LWR coolant environment by the Fen correction factor were proposed by Higuchi and others and are given in NUREG/CR-6909. This paper deals with the application of the proposed assessment procedures of ANL and the application to plant conditions. Therefore conservative assessment procedures are introduced without assuming the knowledge of detailed stress and strain calculations or temperature transients. Additionally, detailed assessment procedures based on Finite-Element calculations, respecting in-service temperature measurements including thermal reference transients and complex operational loading conditions are carried out. Fatigue evaluation of a PWR primary circuit component is used in order to evaluate the influence of plant like conditions numerically. Conclusions regarding the practical application are drawn by means of comparing the ANL approach considering laboratory conditions, conservative assessment procedures for the determination of cumulative fatigue usage factors of plant components and detailed assessment procedures. Plant like loading conditions, complex component geometries, loading scenarios and reference temperature transients shall be taken into account. Practical issues like the determination of the mean temperature or the strain rate have to be considered adequately.

4718855 Socket for integrated circuit component

1988 ◽  
Vol 28 (4) ◽  
pp. 667
Author(s):  
TimothyB Billman ◽  
JamesR Coller ◽  
Gary Marpoe
Keyword(s):  
Integrated Circuit ◽  
Circuit Component

scholarly journals A Non-Dissipative Equalizer with Fast Energy Transfer Based on Adaptive Balancing Current Control

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1990
Author(s):  
Shun-Chung Wang ◽  
Chun-Yu Liu ◽  
Yi-Hua Liu
Keyword(s):  
Energy Transfer ◽  
Duty Cycle ◽  
Nonlinear Behavior ◽  
Lithium Ion ◽  
Current Control ◽  
Test Results ◽  
Voltage Difference ◽  
Battery Packs ◽  
Circuit Component ◽  
Transfer Stage

In this study, an active inductive equalizer with fast energy transfer based on adaptive balancing current control is proposed to rapidly equilibrate lithium-ion battery packs. A multiphase structure of equalizer formed by many specific parallel converter legs (PCLs) with bidirectional energy conversion serves as the power transfer stage to make the charge shuttle back and forth between the cell and sub-pack or sub-pack and sub-pack more flexible and efficient. This article focuses on dealing with the problem of slow balancing rate, which inherently arises from the reduction of balancing current as the voltage difference between the cells or sub-packs decreases, especially in the later period of equalization. An adaptive varied-duty-cycle (AVDC) algorithm is put forward here to accelerate the balance process. The devised method has taken the battery nonlinear behavior and the nonideality of circuit component into consideration and can adaptively modulate the duty cycle with the change of voltage differences to maintain balancing current nearly constant in the whole equilibrating procedure. Test results derived from simulations and experiments are provided to demonstrate the validity and effectiveness of the equalizer prototype constructed. Comparing with the conventional fixed duty cycle (FDC) method, the improvements of 68.3% and 8.3% in terms of balance time and efficiency have been achieved.

scholarly journals Development of Heavy Metal Potentiostat for Batik Industry

2020 ◽  
Vol 10 (21) ◽  
pp. 7804
Author(s):  
Siti Nur Hanisah Umar ◽  
Mohammad Nishat Akhtar ◽  
Elmi Abu Bakar ◽  
Noorfazreena M. Kamaruddin ◽  
Abdul Rahim Othman
Keyword(s):  
Heavy Metal ◽  
Reactive Dyes ◽  
Digital Converter ◽  
Digital To Analog Converter ◽  
Analog To Digital ◽  
Accuracy Test ◽  
Analog Converter ◽  
Circuit Component ◽  
Scale Design ◽  
Precision Rate

The consumption of reactive dyes in the batik industry has led to a severe concern in monitoring the heavy metal level in wastewater. Due to the necessity of implementing a wastewater monitoring system in the batik factory, a Heavy Metal potentiostat (HMstat) was designed. The main goal of this study is to understand the optimal design concept of the potentiostat function in order to investigate the losses of accuracy in measurement using off-the-shelf devices. Through lab-scale design, the HMstat comprises of an analog potentiostat read-out circuit component (PRCC) and a digital control signal component (CSC). The PRCC is based on easy to use components integrated with a NI-myRIO controller in a CSC. Here, the myRIO was equipped with built-in analog to digital converter (ADC) and digital to analog converter (DAC) components. In this paper, the accuracy test and detection of cadmium(II) (Cd2+) and lead(II) (Pb2+) were conducted using the HMstat. The results were compared with the Rodeostat (an open source potentiostat available on the online market). The accuracy of the HMStat was higher than 95% and within the precision rate of the components used. The HMstat was able to detect Cd2+ and Pb2+ at −0.25 and −0.3 V, respectively. Similar potential peaks were obtained using Rodeostat (Cd2+ at −0.25 V and Pb2+ at −0.3 V).

Characteristics of Memristor Series-Parallel Connection Circuit with Applications

2013 ◽  
Vol 284-287 ◽  
pp. 2485-2489
Author(s):  
Wei Hong Yin ◽  
Li Dan Wang ◽  
Shu Kai Duan
Keyword(s):  
Large Scale ◽  
Piecewise Linear ◽  
Piecewise Linear Function ◽  
Parallel Connection ◽  
Low Energy Consumption ◽  
Circuit Component ◽  
Parallel Network ◽  
The Mathematical Model ◽  
Nonlinear Resistance ◽  
Resistance Value

Memristor is a nonlinear resistance with the ability of memory and its resistance depends on the amount of charge or magnetic flux. As a new circuit component, the memristor is not only expected to promote the evolution of electronic industry but also has huge potential application in many fields because of its small size, low energy consumption and be large scale integrated easily. In this paper according to the mathematical model of memristor based on a piecewise-linear function, the characteristics of memristor series-parallel connection circuit are analyzed by MATLAB and SPICE simulations. A series of simulation results show that the memristive series-parallel network is still a nonlinear element, the resistance value of memristor depends on the initial condition greatly and the electronic characteristics are more complex. It is also applied to the ladder signal generator which can be used in the controller circuit.

Sign in / Sign up

Export Citation Format

Share Document