Results 241 to 250 of about 1,007,835 (292)

A multipurpose power supply for constant current, constant voltage, and constant power applications

Review of Scientific Instruments, 2021
Constant current (CC), constant voltage (CV), and constant power (CP) find numerous applications in different stages of the power supply chain and are often a part of various industrial and commercial needs. Although several conventional power supplies are available in the market to provide CC, CV, and CP, their outputs are specific and limited to one ...
Geethanjali Pandeswara, Naresh Pasula, Geshma Kumari R   +2 more
openaire   +2 more sources

Constant voltage electromigration testing

2011 IEEE International Integrated Reliability Workshop Final Report, 2011
Constant voltage electromigration was investigated as a method for assessing reliability in narrow Cu conductors. It is demonstrated theoretically that constant voltage (CV) testing can offer advantages over constant current (CC) testing for material that may vary significantly in geometry (thickness or line width) from sample to sample.
J. R. Lloyd, N. Connelly, Z. Zhang, M. Rizzolo   +3 more
openaire   +1 more source

Constant voltage ultracapacitor

Journal of Renewable and Sustainable Energy, 2012
Ultracapacitors have attracted lots of attention recently due to their growing use in hybrid vehicles and in energy storage applications for the smart grid. A very undesirable feature of ultracapacitors is the fact that the voltage drops as the capacitor is discharged.
openaire   +1 more source

Constant-current versus constant-voltage VCM drive analysis

IEEE Transactions on Magnetics, 1990
A voice-coil-motor (VCM)-driven actuator is analyzed for both constant-current and constant-voltage drive operation. Through the use of dimensional analysis, the solutions to the two drive methods are directly compared. This allows for quick evaluation of an actuator design. The analysis compares the actuator performance parameters, including seek time,
W.J. Sohn, T.J. Chainer
openaire   +1 more source

Relationship between Constant Voltage and Constant Capacitance DLTS

International Journal of Electrical Engineering & Education, 1983
A unified approach is presented in the derivation of equations for the constant-voltage capacitance transient and constant-capacitance voltage transient in deep-level transient spectroscopy (DLTS), and for the relationship between them. The validity of these equations is independent of the device and nature of deep traps.
W. S. Lau, Y. W. Lam, C. C. Chang
openaire   +1 more source

A constant-voltage battery charger

Transactions of the American Institute of Electrical Engineers, Part II: Applications and Industry, 1960
THE USE OF BATTERIES in control centers, such as are found in sub- and central stations, is well established. With this application goes the need for a battery charger which will maintain the battery in a fully charged state. It must also carry any fixed load and be capable of recharging the battery when required by battery and circuit conditions.
C. H. Leet, W. Zug
openaire   +1 more source

Constant Voltage Anemometer Practice in Supersonic Flows

AIAA Journal, 2001
It is shown that the constant voltage anemometer (CVA) is well adapted for measurements in supersonic flows. Small hot-wire time constant, large bandwidth, high signal-to-noise ratio, variable hot-wire overheat, and independence of the cable capacitance effects of the hot wire were all observed with the CVA.
Genevieve Comte-Bellot, Garimella R. Sarma   +1 more
openaire   +1 more source

Constant-reflector-voltage klystron

Proceedings of the IEE - Part B: Radio and Electronic Engineering, 1958
A theoretical analysis has been attempted on reflex klystrons which operate over a wide range of frequencies at a constant reflector voltage. As a result of experiments on some experimental tubes for the 4 and 7Gc/s bands, it was confirmed that the theoretical results obtained were in good agreement with the experiments.
openaire   +1 more source

Staged voltage mode in membrane capacitive deionization: Comparison with constant voltage and constant current modes

Desalination, 2020
Abstract The most typical membrane capacitive deionization (MCDI) operating modes, constant voltage (CV) and constant current (CC), respectively, exhibit their own limitations on energy consumption and removal efficiency. Therefore, a staged voltage (SV) mode was first investigated as a method to take advantage of the CV and CC modes.
Jongmoon Choi, Jungwon Kim, Seungkwan Hong   +2 more
openaire   +1 more source

Constant current versus constant voltage plasma anodization techniques

Applied Surface Science, 1987
Abstract In this paper a comparison is made between two basic techniques of plasma anodization, i.e. constant current and constant voltage methods. The comparison is based on new mathematical-physical models of both plasma anodization techniques, in which the condition of oxide growth during the process is expressed in terms of fluxes (oxygen ions ...
openaire   +1 more source