... FOR Transportable and Hybrid Transportable AC Systems Submitted 11 July, 2005 BY ... FOR Transportable and Hybrid Transportable AC Systems ...
DTIC Science & Technology
of effectiveness of AC systems, loitering and footprints around AC units, and missing caps on AC units. Anyone handling your AC unit should be EPA-certified. Refrigerants serve...
Science.gov Websites
... IS BASED ON AN AC METHOD KNOWN IN ... WHEN AC CURRENT FLOWS THROUGH THE SYSTEM, IT ... LAYER AND AN IMPEDANCE OF THE ...
... of a specimen with crack extension, utilize either a dc or, more recently, an ac measurement system. The dc and ac systems are described, and the ...
... The ac initiation system is pre-armed by ... activates a load when an ac power signal of ... Patents, *Explosives initiators, Control systems, Ignition circuits ...
... The primary benefits of a TACS or HTACS system for the Military ... basis for larger scale implementation of with solar powered tactical AC systems. ...
motor speed control, consider the use of alternating current (AC) variable frequency drive ... AC variable frequency systems for motor speed control offer ...
NASA Website
Efficient, light-weight power conditioning equipment was investigated in the area of AC to AC transformation, where AC of a variable frequency is to be transformed efficiently into AC of a fixed frequency at a significant power level. This task, which fol...
National Technical Information Service (NTIS)
... Accession Number : ADA371039. Title : The AC 2000: The Astrographic Catalogue on the System Defined by the Hipparcos Catalogue,. ...
... System A custom designed AC nulling circuit will supplied in order to cancel AC flux from the AC magnet that is coupled into the input circuits. ...
Sep 25, 2008 ... Kevin Boyce, HST Systems Engineer, ACS Repair: What failed is a power supply. And in fact, in the ACS there were two power supplies, ...
The catalytic activity of the CoAcAc)/sub 2/-Et/sub 2/Al(AcAc) system in the hydrogenation of styrene and benzene has been studied and compared to the Co(AcAc)/sub 2/-AlEt/sub 3/ catalytic system. It is shown that the use of Et/sub 2/Al(AcAc) leads to a reduction of ...
Energy Citations Database
... ADZjAEC)AD'MAEE*AD:*AD??AD*PAE*&AD**AD*AC?iADW?AC?WADG*AC ?AD(?AC*pAC ^#AB?AC TAB?YAC8*AB2?AC*?AB
... Accession Number : AD0131786. Title : STUDY ON AC GENERATING MACHINE CHARACTERISTICS FOR AIRCRAFT ELECTRIC SYSTEMS. ...
... Title : CURRENT RATING OF AIRCRAFT CABLES FOR AC SYSTEMS,. Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC. ...
A system and method for determining stator winding resistance in an AC motor is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of an AC motor. The circuit includes at least one contactor and at least one switch ...
This patent describes a static converter system operating between opposite ones of respective AC and DC buses. It comprises: at least three rectifier bridges connected in parallel to the DC buses, each rectifier bridge having three AC lines connected to the middle point of two rectifier devices in series between the two DC buses, the ...
This report reviews a number of issues specific to stand-alone AC lighting systems. A review of AC lighting technology is presented, which discusses the advantages and disadvantages of various lamps. The best lamps for small lighting systems are compact f...
static electrical switches for both ac and dc systems; defines ..... The programmer concept is applicable to either ac systems or dc systems consisting of ...
power over extremely long distances, but to also connect to AC asynchronous grid systems, i.e., AC systems operating at different frequencies. ...
Oct 23, 2008 ... SUBTOPIC TITLE: Precision Spacecraft Formations for Telescope Systems. PROPOSAL TITLE: Colloid Thruster for Attitude Control Systems (ACS) ...
Similarities and differences of the thermal analysis issues between the intelligent and general AC contactors are analyzed. Heat source model of the magnet system is established according to the unique control mode of the intelligent AC contactor. Linking with the features common of the two kinds of contactors, the extension of the ...
NASA Astrophysics Data System (ADS)
This conference examined the following aspects of 750 to 1500 kV ac power transmission systems and equipment: trends in systems and equipment development; electric field measurements and the consideration of electric fields in EHV and UHV ac system design...
Showing robustness problems of AC systems demonstrates that the limit. Page 4. - 2- extends to AC systems as well, and one should not expect any AC system to ...
active and reactive power, and spinning reserves in order to maximize profits. Results for a 14-node system are also presented. Index Terms�Ac system, ...
E-print Network
needs in both the 115 V ac and 28 V dc systems and excess power will be made ... Both the ac and dc systems use the aircraft structure for ground. ...
The $1 million ac-dc system operation laboratory of Edison Electric Institute on the campus of the University of Pennsylvania is described.
... Accession Number : AD0727748. Title : AC Power System Evaluation Variable Frequency Input - Constant Frequency Output. ...
... Approved for public release; distribution is unlimited A THREE-PHASE HYBRID DC-AC INVERTER SYSTEM UTILIZING HYSTERESIS CONTROL ...
employed in ac and dc magnetic systems to obtain completely contactless suspension. The ac systems, both eddy-current and resonant, are characterized by ...
Concepts of maximum power transfer of dc systems and associated ac voltage variations, particularly at inverter stations having low short-circuit ratios, have been extended to include various ac load models and an ac line in parallel with the dc line. The operating capabilities are shown to vary from those ...
The system described provides protection for phase sensitive loads from being or remaining connected to ac power lines whenever a phase reversal occurs. It comprises a solid state phase detection circuit, a dc power relay circuit, an ac-to-dc converter fo...
To improve the performance of practical active control system (ACS) for unstable combustors, the effects of system noise and ACS time delay upon combustion instabilities and the ACS performance were studied. Experimental and theoretical studies of an unco...
...System 5 2010-10-01 2010-10-01 false [Reserved] A Appendixes A-C to Chapter 7 Federal Acquisition Regulations System AGENCY FOR INTERNATIONAL DEVELOPMENT Appendixes A-C to Chapter 7...
Code of Federal Regulations, 2010
Autographa californica multiple nucleopolyhedrovirus (AcMNPV) ac143 (odv-e18) is a late gene that encodes for a predicted 9.6 kDa structural protein that locates to the occlusion derived viral envelope and viral induced intranuclear microvesicles [Braunagel, S.C., He, H., Ramamurthy, P., and Summers, M.D. (1996). Transcription, translation, and cellular ...
PubMed
Autographa californica multiple nucleopolyhedrovirus (AcMNPV) ac142 is a baculovirus core gene and encodes a protein previously shown to associate with occlusion-derived virus (ODV). To determine its role in the baculovirus life cycle, we used the AcMNPV bacmid system to generate an ac142 ...
This paper reports on a local electrochemical impedance spectroscopy (LEIS) technique for mapping the ac impedance distribution, as a function of frequency, of an electrode. In LEIS, as in traditional ac impedance methods, a sinusoidal voltage perturbation between the working and reference electrode is maintained by driving an ac ...
The ac characteristics of a double-conversion system are investigated. Using a simple method, the harmonic composition of the alternating currents are determined as a function of the connection type of the ac/dc rectifier and of the parameters characterizing the dc/dc chopper operations. It is shown that the best ...
KAIST maeng@kaist.ac.kr Embedded Computer Systems Embedded Computer Systems #12;22004 (jinsoo@cs.kaist.ac.kr)2007 Fall CS310 Embedded Computer Systems Three key embedded system technologies Three key embedded@cs.kaist.ac.kr)2007 Fall CS310 Embedded ...
A study comparing the results of a digital computer program and an hvdc simulator is reported. The digital computer program permits the study of combined ac-dc systems, and provides a complete representation of one or more hvdc transmission systems in a large scale interconnected ac system. The ...
