Bibliografie tematiche / Current voltage measurements

Indice

Articoli di riviste
Tesi
Libri
Capitoli di libri
Atti di convegni
Rapporti di organizzazioni

Letteratura scientifica selezionata sul tema "Current voltage measurements"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 18 febbraio 2022

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Consulta la lista di attuali articoli, libri, tesi, atti di convegni e altre fonti scientifiche attinenti al tema "Current voltage measurements".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Articoli di riviste sul tema "Current voltage measurements"

Nonaka, Kyoya, Tadashi Koshizuka e Kunihiko Hidaka. "Current Measurement at Prospective Transient Recovery Voltage Measurements". IEEJ Transactions on Power and Energy 140, n. 9 (1 settembre 2020): 700–704. http://dx.doi.org/10.1541/ieejpes.140.700.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Cascante, Giovanni, John Vanderkooy e Wilson Chung. "Difference between current and voltage measurements in resonant-column testing". Canadian Geotechnical Journal 40, n. 4 (1 agosto 2003): 806–20. http://dx.doi.org/10.1139/t03-023.

Testo completo

Abstract (sommario):

The resonant-column test is one of the most common procedures for dynamic characterization of soils (American Society for Testing and Materials standard). The test procedures require the measurement of the current flowing through the driving coils. In many cases, however, the input voltage has been measured and the results analyzed as a traditional current measurement. In this paper, the difference between current and voltage measurements is clarified; specifically, a new transfer function is presented for the analysis of data when the input voltage is measured. The new model is evaluated by testing three aluminum probes. Wave velocities computed from voltage and current measurements are similar; however, damping ratios are significantly overestimated if voltage-based measurements are analyzed with the standard procedures because the motion of the magnets induces an opposite voltage in the coils. Results from voltage and current measurements agree only if the new transfer function is used for the analysis of voltage data. Exploratory results for a dry-sand specimen, tested under different shear-strain levels (maximum shear strain γmax < 103), demonstrate the effect of nonlinear behaviour on current and voltage measurements. Current-based measurements are recommended because they do not require the evaluation of the complex impedance of the driving coils. Furthermore, current-based measurements are more precise, especially for the characterization of specimens that have low resonant frequencies.Key words: resonant-column testing, damping ratio, attenuation, mechanical waves, shear modulus, wave velocity.

Gli stili APA, Harvard, Vancouver, ISO e altri

Vanin, Valery, Alexandr Bulychov, Maxim Popov, Olga Vasilyeva e Maria Shakhova. "About influence of non-sinusoidal currents and voltages on the amount of the electric energy". MATEC Web of Conferences 245 (2018): 06009. http://dx.doi.org/10.1051/matecconf/201824506009.

Testo completo

Abstract (sommario):

The results of measurements of the harmonics components of the current, voltage, power of harmonics at the point of connection of electric receivers with a non-linear voltage-current characteristic are considered. It is shown that the amount of electric energy including the non-sinusoidality of the currents and voltages consumed by the non-linear load is less than the amount of the fundamental frequency energy. The difference between them is the harmonic distortion energy that causes extra losses to the electric networks. The voltage harmonic distortions at the measurement point exceed the normative values for 0.4 kV electric networks.

Gli stili APA, Harvard, Vancouver, ISO e altri

Crotti, Gabriella, e Domenico Giordano. "Set up and characterization of a measuring system for PQ measurements in a MV site with PV generation". ACTA IMEKO 4, n. 1 (5 febbraio 2015): 97. http://dx.doi.org/10.21014/acta_imeko.v4i1.171.

Testo completo

Abstract (sommario):

The features of a Power Quality measurement system which includes both voltage and current transducers and a self-developed measuring instrument are described. The system is intended for measurements in substations at medium voltage level. A Rogowski coil and a voltage divider are the used transducers, whereas the measuring instrument is based on a Reconfigurable I/O-FPGA system with embedded software. Attention is focused on the procedures adopted for the characterization of the voltage and current sensors, which are carried out taking into account the expected on-site measurement conditions. An example of use of the systems for measurement of some PQ parameters in a private substation which connects an industrial load and two photo-voltaic generation plants to the public MV voltage network is presented, together with the associated voltage and current uncertainty budget. By making use of the results obtained in the characterization phase, the current and voltage measurement uncertainty can be reduced.

Gli stili APA, Harvard, Vancouver, ISO e altri

Harrison, Reid R., Ilya Kolb, Suhasa B. Kodandaramaiah, Alexander A. Chubykin, Aimei Yang, Mark F. Bear, Edward S. Boyden e Craig R. Forest. "Microchip amplifier for in vitro, in vivo, and automated whole cell patch-clamp recording". Journal of Neurophysiology 113, n. 4 (15 febbraio 2015): 1275–82. http://dx.doi.org/10.1152/jn.00629.2014.

Testo completo

Abstract (sommario):

Patch clamping is a gold-standard electrophysiology technique that has the temporal resolution and signal-to-noise ratio capable of reporting single ion channel currents, as well as electrical activity of excitable single cells. Despite its usefulness and decades of development, the amplifiers required for patch clamping are expensive and bulky. This has limited the scalability and throughput of patch clamping for single-ion channel and single-cell analyses. In this work, we have developed a custom patch-clamp amplifier microchip that can be fabricated using standard commercial silicon processes capable of performing both voltage- and current-clamp measurements. A key innovation is the use of nonlinear feedback elements in the voltage-clamp amplifier circuit to convert measured currents into logarithmically encoded voltages, thereby eliminating the need for large high-valued resistors, a factor that has limited previous attempts at integration. Benchtop characterization of the chip shows low levels of current noise [1.1 pA root mean square (rms) over 5 kHz] during voltage-clamp measurements and low levels of voltage noise (8.2 μV rms over 10 kHz) during current-clamp measurements. We demonstrate the ability of the chip to perform both current- and voltage-clamp measurement in vitro in HEK293FT cells and cultured neurons. We also demonstrate its ability to perform in vivo recordings as part of a robotic patch-clamping system. The performance of the patch-clamp amplifier microchip compares favorably with much larger commercial instrumentation, enabling benchtop commoditization, miniaturization, and scalable patch-clamp instrumentation.

Gli stili APA, Harvard, Vancouver, ISO e altri

Yokoshima, I. "RF impedance measurements by voltage-current detection". IEEE Transactions on Instrumentation and Measurement 42, n. 2 (aprile 1993): 524–27. http://dx.doi.org/10.1109/19.278616.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

LARSEN, J. C., e T. B. SANFORD. "Florida Current Volume Transports from Voltage Measurements". Science 227, n. 4684 (18 gennaio 1985): 302–4. http://dx.doi.org/10.1126/science.227.4684.302.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Kanálik, Martin, Anastázia Margitová, Ľubomír Beňa e Andrea Kanáliková. "Power System Impedance Estimation Using a Fast Voltage and Current Changes Measurements". Energies 14, n. 1 (24 dicembre 2020): 63. http://dx.doi.org/10.3390/en14010063.

Testo completo

Abstract (sommario):

Equivalent power system impedance is an important electrical quantity from many points of view. Areas in which this parameter plays an important role include, in particular: Voltage stability analysis, power quality, or fault condition analysis. Power system impedance estimation in real operation conditions can be performed by one of the non-invasive methods described by different authors. This paper aims to investigate and compare seven different methods for power system impedance estimation based on voltage and current variations measurement. After a brief description of selected methods, these methods were applied for power system impedance estimation in the case of two simple simulation tests and then in the case of three real measured data. Voltage and current changes used for power system impedance estimation in real conditions were measured in high voltage (HV) and medium voltage (MV) substations feeding steel mill with the electric arc furnace (EAF) operation. As the results presented in this paper have shown, not all of the methods analyzed are suitable for determining the power system impedance based on the fast step changes of voltage and current that occur, for example, during an EAF operation. Indeed, some of the tested methods were originally designed to determine the power system impedance from changes in voltages and currents recorded at steady state.

Gli stili APA, Harvard, Vancouver, ISO e altri

Sulaksono, Santiko Tri, Sudjatmi Kustituantini Alfa e Dani Gustaman Syarif. "CRITICAL HEAT FLUX NANOFLUIDS MEASUREMENTS SYSTEM USING ARDUINO". JURNAL TEKNOLOGI REAKTOR NUKLIR TRI DASA MEGA 23, n. 1 (17 febbraio 2021): 9. http://dx.doi.org/10.17146/tdm.2021.23.1.6005.

Testo completo

Abstract (sommario):

Crtical heat flux (CHF) is an important characteristic of nanofluids. The CHF measurements were carried out in nanofluid research at the Center for Applied Nuclear Science and Technology. These measurements are done manually using a variable power supply and a multimeter. However, it was difficult to record the voltage and current due to the sudden break of the wire. In this study, Arduino was used to measure CHF automatically. The voltage is applied to the wire and increases automatically along with the measurement of the voltage and current in the wire. The results of the voltage and current measurements were compared with a multimeter and were not significantly different. It can be concluded that the CHF measurement system using arduino can be used to measure nanofluid CHF.

Gli stili APA, Harvard, Vancouver, ISO e altri

Meriläinen, Esa. "Comparative Measurements on Loudspeaker Distortion: Current vs. Voltage Control". Archives of Acoustics 42, n. 1 (1 marzo 2017): 71–81. http://dx.doi.org/10.1515/aoa-2017-0008.

Testo completo

Abstract (sommario):

Abstract Modulation and harmonic distortion produced by ordinary moving-coil direct-radiator drive units are measured under current control and voltage control. A realistic two-tone test signal is used to investigate the detrimental effect of the voice coil electromotive forces on the voltage-to-current conversion that is critical with voltage control. Dramatic improvements in distortion performance are obtained with current control. Current nonlinearities in voltage-controlled speakers are shown to be the dominant source of modulation and odd harmonic distortions at signal frequencies above the fundamental resonance region. Currents in conductive voice coil formers also seem to be significant sources of distortion; with current control and non-conductive formers, odd harmonics and related modulation products virtually vanished in the upper midrange.

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Tesi sul tema "Current voltage measurements"

Holmgren, Jens. "Investigation of alternative current measurements in high-voltage applications". Thesis, Linköping University, Department of Science and Technology, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8149.

Testo completo

Abstract (sommario):

ABB:s MACH2 system uses a number of currents to ignite thyristors for AC/DC-trassfformation and they are measured for control and protection. The measurement methods used today has major drawbacks. Two alternative techniques are investigated, one based on the Hall-Effect (HED) and the other based on Anisotropic Magnetoreistanse (AMR), both techniques sensing the magnetic field produced by currents in a conductor. The HED hawe low sensitivity so some kind of flux concentrators is needed. This adds volume, costs and complexity to the device. The AMR technique is much more sensitive than the HED. Unfortunately AMR are also much more sensitive for high over currents that may damage the devise, and they are not as common on te market. By testing linearity, step response and frequency dependency for some components, my conclusion is that HED components with toroidal flux concentrators utilizing magnetic feedback (Closed Loop, CL) may be used in this particular application. A drawback with CL are that they, when measuring sharp edged step signals, suffer from overshoots at the output that might activate the over current protection.

Gli stili APA, Harvard, Vancouver, ISO e altri

Amin, M. Shahrooz 1981. "Advanced Faraday cage measurements of charge, short-circuit current and open-circuit voltage". Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28730.

Testo completo

Abstract (sommario):

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.
"Spetember 2004."
Includes bibliographical references.
(cont.) above atmospheric pressure caused both positive current and negative current pulses with the negative pulse larger than the positive pulse. A pressure decrease of more than 10psi below atmospheric pressure also caused both positive current and negative current pulses with the positive current larger than the negative current pulse. Experiments showed that the negative current was generated by the galvanic action between the two dissimilar metals in the triaxial connector connecting the center electrode of the electrode chamber with the electrometer, as water condensed. Positive current could have been produced by the evaporation of moisture from the center electrode of the electrode chamber. Dew point analysis is performed to show that for water to condense on metallic surfaces, it is not necessary to reach the dew point. The calculated dew point temperature is lower than the temperature at which the water condenses upon the electrode surfaces. In the liquid and solid dielectric experiments, we use a patented Faraday cage which is composed of two identical in-line hollow, gold-plated Faraday cup electrodes that enclose the samples which move between them during each measurement under computer control. We conducted charge measurements using various electrometers to rule out the possibility of false instrument readings due to input offset voltage and other experimental effects. One wire mesh style of Faraday cage connected with an electrometer was also used to measure the charge. The liquid dielectrics are distilled water, tap water, Sargasso Sea water ...
This thesis is devoted to Faraday cage measurements of air, liquid, and solid dielectrics. Experiments use pressurized air with fixed Faraday cage electrodes, and a moving sample of liquid and solid dielectrics between two Faraday cup electrodes. Extensive experiments were conducted to understand the source of the unpredictable net measured charge. In the air experiment, the Faraday cage consists of a hollow, cylindrical, gold-plated brass electrode mounted within a gold-plated brass hermetic chamber that connects with earth ground. Measurements of transient current at various temperatures and humidity during transient air pressure change are presented. The flow of electrode current is shown not to be due to capacitance and input offset voltage changes, since the calculated value is on the order of 10⁻¹⁶ Amperes which is much less than the measured currents of order 10⁻¹³ Amperes. By controlling the internal relative humidity of air in the Faraday cage, and from the measurements of current using dry nitrogen, we confirm that the absence of moisture causes no current to flow. Amplitude of the measured current is found to be dependent upon the internal relative humidity. Repeatedly, polarity reversals were observed to occur, in part due to galvanic action between dissimilar metals as water condensed upon the insulating surface between them. At a low temperature with a small pressure change, only one pulse of current was observed to occur but, with a pressure change of more than l0psi, two opposite polarity pulses of current were shown to occur almost simultaneously. A small pressure increase only caused a pulse of negative current, and a small pressure decrease only caused a pulse of positive current. A pressure increase of more than l0psi
by M. Shahrooz Amin.
S.M.

Gli stili APA, Harvard, Vancouver, ISO e altri

Tong, Sai-kit. "A computer-aided measurement system for monopolar high-voltage direct-current coronating lines /". [Hong Kong] : University of Hong Kong, 1986. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12321771.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

湯世傑 e Sai-kit Tong. "A computer-aided measurement system for monopolar high-voltage direct-current coronating lines". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1986. http://hub.hku.hk/bib/B31207467.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Turkmen, Coskun Aziz. "Calibration Of Conventional Measurement Transformers Against Harmonic Components By Using Field Measurements Of Optical Transducers And Resistive-capacitive Voltage Transformers". Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611920/index.pdf.

Testo completo

Abstract (sommario):

It is known from the literature that conventional voltage and current transformers measure inaccurate values for voltage and current harmonics which are parts of power quality. Maximum bandwidth of conventional current transformers, which are used in electricity transmission and distribution systems, is 1.5-2 kHz and it is lower for conventional voltage transformers. Also, it is known that
voltages in some frequency spectrum are measured higher and voltages in another frequency spectrum are measured lower by the conventional voltage transformers. Furthermore, because of the phase shift of fundamental component caused by the conventional current and voltage transformers, losses and efficiency can not be calculated accurately. In this work, through the simultaneous measurements taken at the same feeder by both conventional transformers and new technology measurement transformers
amplitude and phase shift errors which are caused by conventional transformers depending on frequency and so harmonics, are examined and evaluated. Amplitude coefficients and phase shifts are determined for different types of conventional transformers to be able to calibrate measurement deviation. Through this work, measured data by conventional transformers will be accurate and realistic in terms of harmonic components. This matter is important to determine whether the accurate limits which will be set in the future possibly concerning with harmonics and interharmonics, are surpassed or not
also for punitive sanction.

Gli stili APA, Harvard, Vancouver, ISO e altri

Carbonell, Cortés Carla. "Customizing a low temperature system for microwave transmission measurements. Quantum transport in thin TiN films and nanostructures". Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/83635.

Testo completo

Abstract (sommario):

The work presented in this thesis consists of two distinct parts. The first years of my work focused on the development and improvement of a new equipment built to study magnetic and electrical properties, particularly applying microwaves in reflection and transmission conditions. The sample space in conventional cryostats with superconducting magnets is usually smaller than 10-mm-diameter. Our equipment consists of a hollow cylindrical cryostat having a 33-mm-diameter hole all along its vertical axis. These characteristics enable the measurement of large samples and the use of big resonant cavities to get to a wider microwave (MW) range, particularly in transmission measurements. The cryostat has a superconducting magnet made of a solenoid that applies a magnetic field from -5 T to 5 T, and a temperature controller that works in the range 1.8 - 300 K. The system is cooled down with nitrogen and helium and the temperature can be controlled with the precision required by each experiment using a heater and a needle valve. Different probes for a wide range of experiments in our cryostat have been developed in order to be as versatile as possible. Following this idea each one has been divided in two halves that can be combined as it is preferred in each experiment. Each probe is made of a 8-to-10-mm-diameter stainless steel tube that is used to protect and give some stiffness to the measuring device. A coaxial cable and different waveguides are added to these stainless steel jackets, so we end up having nine halves, four upper parts that can be combined with five lower parts. There are three waveguides working in the frequency ranges 33-50 GHz (WR22), 50-75 GHz (WR15) and 75-110 GHz (WR10), and a coaxial cable that maintains the fundamental mode at a frequency of 60 GHz. In the extra lower part a 16-pin Fischer connector is added at the bottom in order to be able to perform more resistance experiments. Once the probes have been built, they have been tested to make sure the system is able to reach high vacuum and to be cooled down. Problems found along the way have been solved and at the end all the probes work properly. Different sample holders have been designed and built according to the needs in each experiment. The system has been tested by reproducing experimental results with Mn12-acetate, as quantum tunneling and magnetic avalanches, and by obtaining new results on microwave transmission in thin TiN films. The second part of the thesis focuses on the measurements of thin TiN films in a dilution refrigerator working with a mixture of 3He and 4He that enables experiments at a few tens of millikelvins. The cryostat also contains a superconductor magnet which can apply a magnetic field up to 5 T. Low-temperature transport properties of nanoperforated superconducting TiN films have been experimentally studied. Resistance measurements have been performed in the critical region of the superconductor-insulator transition (SIT), applying the magnetic field perpendicular to the plane of the structure or the dc current through the sample. SIT is a transition from a superconductor to an insulator state by localizing the Cooper pairs. The evolution of the SIT with temperature, magnetic field and dc current has been investigated in detail. Characteristic parameters have been determined for as-cast thin films using the theory of quantum corrections to conductivity. Disorder-driven and field-induced SITs have been measured. Commensurability effects have been observed down to the lowest experimental temperature, and are emphasized in the more disordered samples. The SIT has been observed for a dc current applied across the sample as changes in the curvature at zero bias current. Experiments prove that electronic transport in the nanoperforated samples is mediated by Andreev conversion. Finally, the existence of the superinsulator state has been experimentally proved.
El treball que es presenta en aquesta tesi consta de dues parts ben diferenciades. La primera pretén el desenvolupament d’un equip experimental concebut per a l’estudi de propietats magnètiques i elèctriques en materials diversos i, en especial, el treball amb radiació de microones en condicions de reflexió i transmissió. La segona s’ha centrat en les mesures de transport d’una capa fina superconductora de nitrur de titani (TiN) de 5 nm de gruix en un criòstat de dilució.

Gli stili APA, Harvard, Vancouver, ISO e altri

Kolic, Edo. "Bearing current and shaft voltage measurement in electrical motors". Thesis, Högskolan Väst, Avdelningen för data-, elektro- och lantmäteriteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-10722.

Testo completo

Abstract (sommario):

Due to the fast-rising voltage pulses of pulse width modulated drives, the generated shaft voltage of electrical motors causes electrical discharge currents in bearings. These discharges can cause bearing failure leading to costly maintenance and unexpected production stops. To eliminate the raised shaft voltage, several techniques are used such as shaft grounding brushes, insulated bearings and conductive grease. The possibility to measure discharge activity on a PWM driven induction motor offers a tool for researchers to test different bearings in electric motors. In order to measure the shaft voltages and bearing currents, modifications of an induction motor are made firstly using 3D software and then on the physical motor. By insulating the bearing from the frame and attaching a copper ring to the bearings outer race bearing currents can be measured. The combined measurements of shaft voltage, bearing currents and frame currents shows the bearings conductive states at low speed, and insulated state at higher speed. Electrical discharge activity (DA) is observed as shaft voltage raises, resulting in a bearing current spike and shaft voltage drops rapidly while stator current is unaffected. Experimental tests were performed with a sample bearing at different operating conditions, such as operating speed, temperature, motor load, etc., to determine the effect of the common mode voltages on bearing currents and shaft voltages. At low temperatures between 23-26 ˚C and motor speeds above 1000 rpm EDM currents were observed. On temperatures above 40 ˚C no major EDM currents were observed regardless of rpm due to the bearing remaining in an ohmic conductive state. The modifications of the motor have shown to give reliable bearing current and shaft voltage measurements that can help in future research in this area.

Gli stili APA, Harvard, Vancouver, ISO e altri

Hölling, Matthias. "Adaptive current and voltage measurement device for low voltage distribution in power nets /". [S.l.] : [s.n.], 2000. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13985.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Bosi, Marco. "Development of a distributed measurement system for detection of high impedance faults in medium voltage power lines". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

Cerca il testo completo

Abstract (sommario):

The aim of this thesis is to propose a new method to detect High impedance Faults, which relies on measuring the phase currents on electrical transmission and distribution grids using a common time source for synchronization. The goal is to measure the residual currents both at the transformer side and at the load side of the network. The time synchronization allows synchronized real-time measurements of the two residual currents at the two ends of the grid. In normal operating conditions and in all load conditions (balanced or unbalanced), the residual currents will result almost equal at the two ends. When a High Impedance Fault occurs, the residual currents at the two ends will differ. The difference in magnitude of the residual currents are monitored in real time and used as a pick-up criteria.

Gli stili APA, Harvard, Vancouver, ISO e altri

Siebrits, F. B. (Francois Bart). "Field implementation of a transient voltage measurement facility using HV current transformers". Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53426.

Testo completo

Abstract (sommario):

Thesis (MScEng)--University of Stellenbosch, 2003.
ENGLISH ABSTRACT: The bandwidth of standard HV measurement devices such as capacitive voltage transformers is too limited in order to measure wideband phenomena. This thesis is concerned with the investigation into a non- intrusive HV transient voltage measurement facility using standard substation HV current transformers (CI's) configured in a transconductance topology. The sensing, summation and integration of the CT capacitive earth currents are investigated. This thesis also reports on the development of a optically isolated link using optical fibre for signal transfer and a computer based data acquisition system.
AFRIKAANSE OPSOMMING: Standaard hoogspannings (HS) meettoerusting soos kapasitiewe spannmgs transformators het beperkte bandwydte vir die meet van wyeband verskynsels. Hierdie tesis handel oor die implementering van 'n HS meetstelsel wat op meinbrekende wyse oorgangsverskynsels meet deur middel van HS stroomtransformators wat in 'n transkonduktansie topologie gekonfigureer is. Die meet, sommasie en integrasie van kapasitoewe grondstrome word ondersoek. Hierdie tesis doen ook verslag aangaande die ontwikkeling van 'n optiese geisoleerde koppelvlak wat gebruik word vir seinoordrag en 'n rekenaar gebasseerde data versamelaar.
pdv201406

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Libri sul tema "Current voltage measurements"

Günther, Sinapius, Hoornaert Winfried e Knovel (Firm), a cura di. Measuring current, voltage, and power. Amsterdam: Elsevier, 1999.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Keithley, Instruments Inc. Low level measurements handbook: Precision DC current, voltage and resistance measurements. 6^a ed. [Cleveland, Ohio]: Keithley, 2004.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Hermach, F. L. An investigation of the uncertainties of the NBS thermal voltage and current converters. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, 1985.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Hermach, F. L. An investigation of the uncertainties of the NBS thermal voltage and current converters. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, 1985.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Schon, Klaus. High Impulse Voltage and Current Measurement Techniques. Heidelberg: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00378-8.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Middelhoek, S., K. Iwansson, G. Sinapius e W. Hoornaert. Measuring Current, Voltage and Power (Handbook of Sensors and Actuators). Elsevier Science, 1999.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

(Editor), D. J. Thompson, e L. H. Luessen (Editor), a cura di. Fast Electrical and Optical Measurements: Volume 1 - Current and Voltage Measurements Volume 2 - Optical Measurements (NATO Science Series E:). Springer, 1986.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Institute Of Electrical and Electronics Engineers. IEEE 1732-2017 IEEE Recommended Practice for Space Charge Measurements on High-Voltage Direct-Current Extruded Cables for Rated Voltages up to 550 kV. IEEE, 2017.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Schon, Klaus. High Impulse Voltage and Current Measurement Techniques: Fundamentals - Measuring Instruments - Measuring Methods. Springer, 2013.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Capitoli di libri sul tema "Current voltage measurements"

Pfeiffer, W. "Ultrafast Electrical Voltage and Current Monitors". In Fast Electrical and Optical Measurements, 145–74. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-017-0445-8_7.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Raitt, W. J., e D. C. Thompson. "Thermal Plasma Measurements in Space Using Direct Measurements of Derivatives of Probe Current-Voltage Characteristics". In Measurement Techniques in Space Plasmas: Particles, 43–48. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm102p0043.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Ossenbrink, H., Anne Drainer e W. Zaaiman. "Errors in Current-Voltage Measurements of Photovoltaic Devices Introduced by Flash Simulators". In Tenth E.C. Photovoltaic Solar Energy Conference, 1055–57. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3622-8_270.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Mahala, Pramila, Ankita Dixit e Navneet Gupta. "Analysis of Graphene/SiO2/p-Si Schottky Diode by Current–Voltage and Impedance Measurements". In Lecture Notes in Electrical Engineering, 583–89. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2553-3_57.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Vediakova, Anastasiia O., e Alexey A. Vedyakov. "Simplified Rotor Angular Velocity Estimation for a Permanent Magnets Synchronous Motor by Current and Voltage Measurements". In Convergent Cognitive Information Technologies, 251–60. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37436-5_23.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Mattana, Richard, Nicolas Locatelli e Vincent Cros. "Spintronics and Synchrotron Radiation". In Springer Proceedings in Physics, 131–63. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64623-3_5.

Testo completo

Abstract (sommario):

AbstractHaving access to the electronic and magnetic properties of spintronic systems is of crucial importance in view of their future technological developments. Our purpose in this chapter is to elaborate how a variety of synchrotron radiation-based measurements provides powerful and often unique techniques to probe them. We first introduce general concepts in spintronics and present some of the important scientific advances achieved in the last 30 years. Then we will describe some of the key investigations using synchrotron radiation concerning voltage control of magnetism, spin-charge conversion and current-driven magnetization dynamics.

Gli stili APA, Harvard, Vancouver, ISO e altri

Schon, Klaus. "High Impulse Currents". In High Voltage Measurement Techniques, 157–200. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21770-9_5.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Schon, Klaus. "High Alternating Voltages and Currents". In High Voltage Measurement Techniques, 7–42. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21770-9_2.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Schon, Klaus. "High Direct Voltages and Currents". In High Voltage Measurement Techniques, 43–77. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21770-9_3.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Kories, Ralf, e Heinz Schmidt-Walter. "Current, Voltage and Power Measurement". In Electrical Engineering, 169–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55629-6_4.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Atti di convegni sul tema "Current voltage measurements"

Miljanic. "Calibrator For Alternating Voltage, Current And Power". In Conference on Precision Electromagnetic Measurements. IEEE, 1988. http://dx.doi.org/10.1109/cpem.1988.671337.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Hurll, J. "Uncertainty in AC voltage measurements". In IEE Colloquium on Precision AC Voltage and Current Measurements up to 1 MHz. IEE, 1997. http://dx.doi.org/10.1049/ic:19970886.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Bergman, A., U. Pogliano, J. Hallstrom, P. Wright, W. Lucas, A. Merev, G. Rietveld, M. Kurrat e J. Rickmann. "Metrology for high voltage direct current". In 2010 Conference on Precision Electromagnetic Measurements (CPEM 2010). IEEE, 2010. http://dx.doi.org/10.1109/cpem.2010.5543404.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Hornak, J., O. Michal, P. Trnka, V. Mentlik, G. Vuity, O. Nouini e Z. A. Tamus. "Current and Voltage Response Measurements on Nanodielectrics". In 2020 IEEE 3rd International Conference on Dielectrics (ICD). IEEE, 2020. http://dx.doi.org/10.1109/icd46958.2020.9341970.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Sanchez, Harold, Jorge Cioffi, Gregory Kyriazis, Rodrigo Ramos, Alexander Martinez, Julio Montaluisa, Julio Gonzalez et al. "SIM.EM-S5 voltage, current and resistance comparison". In 2012 Conference on Precision Electromagnetic Measurements (CPEM 2012). IEEE, 2012. http://dx.doi.org/10.1109/cpem.2012.6251055.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

van Leeuwen, Ronald, Helko van den Brom, Gert Rietveld, Ernest Houtzager e Dennis Hoogenboom. "Measuring the Voltage Dependence of Current Transformers". In 2020 Conference on Precision Electromagnetic Measurements (CPEM 2020). IEEE, 2020. http://dx.doi.org/10.1109/cpem49742.2020.9191845.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Jones, R. G. "A review of precision AC voltage and current measurements". In IEE Colloquium on Precision AC Voltage and Current Measurements up to 1 MHz. IEE, 1997. http://dx.doi.org/10.1049/ic:19970882.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

So, Eddy, e David Bennett. "A current-comparator-based high-voltage reference inductor". In 2014 Conference on Precision Electromagnetic Measurements (CPEM 2014). IEEE, 2014. http://dx.doi.org/10.1109/cpem.2014.6898229.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Slomovitz, Daniel, e Alejandro Santos. "On-line calibration of high voltage current transformers". In 2008 Conference on Precision Electromagnetic Measurements (CPEM 2008). IEEE, 2008. http://dx.doi.org/10.1109/cpem.2008.4574855.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

So, E. "A current-comparator-based high-voltage inductance bridge". In 2008 Conference on Precision Electromagnetic Measurements (CPEM 2008). IEEE, 2008. http://dx.doi.org/10.1109/cpem.2008.4574977.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Rapporti di organizzazioni sul tema "Current voltage measurements"

Effect of Spark Discharge Duration and Timing on the Combustion Initiation in a Lean Burn SI Engine. SAE International, aprile 2021. http://dx.doi.org/10.4271/2021-01-0478.

Testo completo

Abstract (sommario):

Meeting the increasingly stringent emission and fuel efficiency standards is the primary objective of the automotive research. Lean/diluted combustion is a promising avenue to realize high-efficiency combustion and reduce emissions in SI engines. Under the diluted conditions, the flame propagation speed is reduced because of the reduced charge reactivity. Enhancing the in-cylinder charge motion and turbulence, and thereby increasing the flame speed, is a possible way to harness the combustion process in SI engines. However, the charge motion can have a significant effect on the spark ignition process because of the reduced discharge duration and frequent restrikes. A longer discharge duration can aid in the formation of the self-sustained flame kernel and subsequent stable ignition. Therefore, an empirical study is undertaken to investigate the effect of the discharge duration and ignition timing on the ignition and early combustion in a port fueled SI engine, operated under lean conditions. The discharge duration is modulated from 1 ms to 8 ms through a continuous discharge strategy. The discharge current and voltage measurements are recorded during the engine operation to characterize the discharge process. The in-cylinder charge is diluted using fresh air to achieve lean combustion. The in-cylinder pressure measurement and heat release analysis are used to investigate the ignition and combustion characteristics of the engine. Preliminary results indicate that while the discharge duration has a marginal effect on the ignition delay, cyclic variations are notably impacted.

Gli stili APA, Harvard, Vancouver, ISO e altri

Offriamo sconti su tutti i piani premium per gli autori le cui opere sono incluse in raccolte letterarie tematiche. Contattaci per ottenere un codice promozionale unico!