Results 251 to 260 of about 245,043 (276)

A Rapid Resistivity Profiling Technique Using Code Division Multiple Current Injection

Proceedings, 2011
A rapid measurement method for DC resistivity survey is presented. The method uses code division multiple current injection which injects current from plural points simultaneously. Current waveforms are selected as covariance of any pairs of current waveform equal to zero, so that potential response to each current point is easily calculated from ...
S. Imamura, K. Tago, H. Namiki
openaire   +1 more source

Digitally controlled DC-DC converter with novel peak-current injected technique

Intelec 2012, 2012
The purpose of this paper is to present a digitally controlled dc-dc converter with a novel peak current injected technique. In the proposed method, the peak current is able to be detected by using a voltage controlled oscillator (VCO) which is very low cost and the simple delay circuit implemented by the a field programmable gate array (FPGA).
Fujio Kurokawa, Haruki Tamenaga, Yoshihiko Komichi, Yoshihiko Yamabe, Yuichiro Shibata   +4 more
openaire   +1 more source

Electronic ballast with unity-power-factor based on current injection technique

2006 37th IEEE Power Electronics Specialists Conference, 2006
A new combination of power-factor-correction (PFC) and filter components in single-stage electronic ballast is presented in this paper. A symmetrical half-bridge inverter is used to drive the fluorescent lamp. The proposed topology is based on the high frequency current injection technique.
V. B. Borghate, H. M. Suryawanshi, M. R. Ramteke, M. M. Renge   +3 more
openaire   +1 more source

Simple technique for measuring the injection current-induced frequency deviation of semiconductor lasers

Applied Optics, 1989
A simple but reliable method for measuring the injection-current induced frequency deviation of semiconductor lasers is presented. This technique can be used for modulation frequencies of the order of several hundred megahertz.(AIP)
Y C, Chung, T M, Shay
openaire   +2 more sources

Current-Sensing Techniques for Revenue Metering and for Detecting Direct Current Injection from Electric Vehicles: A Review

SAE International Journal of Electrified Vehicles, 2021
<div>Contemporary power networks increasingly include distributed generation and storage, which must follow interconnection standards to ensure power quality and grid safety. One such standard is IEEE 1547-2018, “Limitation of DC injection.” Any poorly designed or malfunctioning power ...
Olga Mironenko, Willett Kempton, Fouad Kiamilev   +2 more
openaire   +1 more source

A Current Injection Built-In Test Technique for RF Low-Noise Amplifiers

IEEE Transactions on Circuits and Systems I: Regular Papers, 2008
In this paper, a practical current injection based built-in test (BIT) technique for impedance-matched RF low-noise amplifiers (LNAs) is proposed. A current generation circuit injects the RF test current at the gate of the LNA; this approach has the advantage that the matching network is not affected by the test circuitry.
null Xiaohua Fan, M. Onabajo, F.O. Fernandez-Rodriguez, J. Silva-Martinez, E. Sanchez-Sinencio   +4 more
openaire   +1 more source

Design and Development of a Multipin SGEMP Current Injection Test Technique

1982
Abstract : Verification tests are imposed by satellite system survivability specifications which require that an SGEMP current injection test be performed on each Qualification Level Component Box to demonstrate SGEMP hardness. This report represents the results of an extensive analytical and computational evaluation of the response of termination ...
J. Tigner, B. Beers, J. Peden, H. O'Donnell, B. Beers, J. Klisch, J. Peden, D. Tasca   +7 more
openaire   +1 more source

Low-velocity impact damage identification using a novel current injection thermographic technique

SPIE Proceedings, 2012
Composite materials are widely used especially in the aerospace structures and systems. Therefore, inexpensive and efficient damage identification is crucial for the safe use and function of these structures. In these structures low-velocity impact is frequently the cause of damage, as it may even be induced during scheduled repair.
S. A. Grammatikos, E. Z. Kordatos, T. E. Matikas, A. S. Paipetis   +3 more
openaire   +1 more source

Simple current injection technique for power factor correction in controlled rectifier applications

IEE Proceedings - Electric Power Applications, 2005
A technique to achieve an efficient and low cost unity power factor for a three-phase controlled rectifier is described. The proposed technique can be used to retrofit a variety of thyristor converters for various applications. It consists of a thyristor bridge, three bidirectional switches, and a current shaping network. The bidirectional switches are
A.I. Maswood, E. Firmansyah
openaire   +1 more source

Capabilities and Limitations in Pulsed Surface Current Injection Techniques for EMP Testing

IEEE Transactions on Nuclear Science, 1982
Direct injection of transient pulses on the surface of a test object is currently under investigation as a potential EMP surveillance tool. Since this test method is intended to complement existing EMP simulators, interior responses obtained with the surface current injection technique (SCIT) must be relatable to responses which are excited under ...
John W. Williams, Shahnaz Arman, Frederick J. Sterk, Eugene R. Carroll   +3 more
openaire   +1 more source