W. Maly · 2002
Summary form only given. It is pointed out that current testing is and will increasingly become attractive as a main technique for testing static CMOS circuits. BIC (built-in current) testing can provide testing qualities achievable with other testing techniques. It is suggested that future testing approaches geared toward high-quality and/or reliability-oriented testing procedures will be formed using a combination of voltage and current testing methodologies.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Assembly Automation · 2001
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Electric and Hybrid Vehicle Technology International · 2019
As the energy density of electric vehicle battery cells increases, testing solutions must develop to meet high-current industrial application requirements
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Ramesh Singh · Elsevier eBooks · 2020
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Erik K. Saathoff, Zachary J. Pitcher, Steven R. Shaw et al. · 2020
Inrush current testing is used for a variety of purposes including sizing fuses and carrying out power supply performance verification. Effective, accurate inrush testing can do more, including enabling power quality measurements and generating exemplars for machine-learning systems monitoring the power line. Some off-the-shelf AC power supplies offer capabilities for controlled inrush testing, but control dynamics and power limitations affect the shape, peak, and time constants of the results. Also, AC power sources obscure details of the grid connection to a load. To provide more accurate and relevant results, a phase-controlled switch is demonstrated as an alternative that can be used in situ. Established or existing line impedance is automatically included for realistic measurements. This paper reviews the design and performance of a proposed phase-controlled switch, and also reviews application of the measured data for line impedance estimation.
Cited by 5
W. Maly, M.J. Patyra · IEEE Journal of Solid-State Circuits · 1992
Built-in current (BIC) testing has proven to be useful through a number of IC fabrication experiments. In this paper the experience gained from these experiments is summarized.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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Claude Thibeault · 2002
The purpose of this paper is to experimentally show that I/sub DDQ/ testing has a rather poor resolution when used to estimate additional current caused by active defects, and that a significant current testing resolution can be obtained with simple data processing. We propose a methodology based on the use of two different criteria the two kinds of current defects-passive and active. This paper represents the first step and deals with active defects. Here we compare different methods applied to estimate additional current caused by this sort of defects. Using Sematech Project S121 data, we show that a resolution gain of 10 over I/sub DDQ/ testing can be reached with simple data processing.
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George Free · 1981
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2016
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C.C. Holt · Physics Bulletin · 1988
Eddy current testing is a means of nondestructively testing electrically conducting materials and is most widely used for production and in-service testing of high integrity components and structures such as nuclear reactor tubing and airframe fastener joints. A probe of at least one coil bearing an alternating current with a frequency between 100 Hz and 5 MHz is placed near the material under test.
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NDT International · 1976
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M.Ya. Antimirov, Andrei Kolyshkin, Rémi Vaillancourt · CRM monograph series · 2007
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2016
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Ahmed Yasser, Ibraheem khateeb · 2019
Because of increasing leakage current and decreasing defective current, reducing testing time while keeping the required accuracy is one of the main I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">DQQ</sub> testing challenges of the new CMOS technology. In this paper, we propose a new sensor design to increase the discriminability of defective quiescent consumption from non-defective consumption based on an innovative approach for testing the digital CMOS circuits.
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2011
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A.H.M. Arnold · Proceedings of the IEE - Part II Power Engineering · 1954
An account is given of the equipment used and the methods which have been developed at the National Physical Laboratory for calibrating alternating-current indicating instruments to an accuracy of 0.1%, or better, of full-scale deflection. The power required for carrying out these tests may range from a few watts for a low-range voltmeter or ammeter up to 60 kW for the equipment used in a turbo-alternator test at high voltage. When the power required is large and at a frequency below 600 c/s, rotating machinery is used, giving an output stable to 0.02% and of waveform with harmonic content not exceeding 2%. For smaller powers, oscillator-amplifier sets are used at all frequencies from 50 c/s up to lOOkc/s, giving an output stable to 0.01% and of waveform with harmonic content not exceeding 0.3%.Instruments are tested by comparison with a standard voltmeter or wattmeter which must itself be calibrated to a higher order of accuracy, say 0.01 or 0.02%. The auxiliary resistors used with these instruments for range changing must also maintain constant and known values under all loading conditions to about 0.01%. Finally, the instrument, a voltmeter, used as a d.c./a.c. transfer instrument must be calibrated on direct current against a Weston cell in association with a suitable voltage divider. The e.m.f. of the Weston cell is maintained constant to approximately 0.001% by maintaining the cell at a temperature constant to 1/4° C, while the error of the voltage divider is of the same order, so that no significant error is introduced into the calibration on account of the d.c. standard.
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Thstm Kolks · TU/e Research Portal (Eindhoven University of Technology) · 1991
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C. James Kirkpatrick, F. Bittinger, Mechthild Wagner et al. · Proceedings of the Institution of Mechanical Engineers Part H Journal of Engineering in Medicine · 1998
Biocompatibility remains the central theme for biomaterials applications in medicine. It is generally accepted that this term means not only absence of a cytotoxic effect but also positive effects in the sense of biofunctionality, i.e. promotion of biological processes which further the intended aim of the application of a biomaterial. The national and international standards for testing regimes represent a lowest common denominator for such applications and do not necessarily ensure that optimal function will be achieved. The authors' thesis is that biocompatibility testing has scope for extensive development with respect to biofunctionality. The present paper reviews current trends in the in vitro aspects of biocompatibility testing. As well as a critical appraisal of the recent literature, future trends are also stressed, which the authors regard as essential for a meaningful integration of a modern biological approach into new developments in the material sciences. These include the application of modern techniques of cell and molecular biology, the concepts of tissue remodelling, hybrid organ development and encapsulated cell technology.
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Arm-based High, Speed Multi-channels Eddy, Zeyi Zhang et al. · 2012
Eddy current testing and ultrasonic testing are two conventional NDT methods. Develop a new kind of NDT instrument with two methods, which shows the concept of NDT integrated technology. ARM9 integrate USB and Ethernet, it can exchange data with DSP or FPGA friendly, which is an ideal embedded processor in testing system at present. This article discuss a testing box based on ARM9 which samples the signals of Eddy Current and Ultrasonic and sends the sample data to Personal Computer through Ethernet to form the whole testing system.
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S J Schnitt, Timothy W. Jacobs · American Journal of Clinical Pathology · 2001
The analysis of breast cancer specimens for alterations in the HER2/neu (c-erb-B2) gene or its protein product has become common practice in surgical pathology laboratories. Although some clinicians use the information derived from these assays for assessing patient prognosis and evaluating the likelihood of response to various chemotherapeutic agents and to tamoxifen, the major clinical role of assessment of HER2 status is to help determine patient suitability for treatment with trastuzumab (Herceptin), a monoclonal antibody targeted to the HER2 protein. 1,2
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