Results 291 to 300 of about 26,525,554 (339)
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Scientific American, 1993
A new generation of silicon switches is presented which enables power grids to meet the needs of utility customers with high efficiency and reliability. These switches are the basis of control systems that can guide the flow of megawatts as rapidly and efficiently as integrated circuits handle microwatts. They can fend off cascading power interruptions
Narain G. Hingorani, Karl E. Stahlkopf
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A new generation of silicon switches is presented which enables power grids to meet the needs of utility customers with high efficiency and reliability. These switches are the basis of control systems that can guide the flow of megawatts as rapidly and efficiently as integrated circuits handle microwatts. They can fend off cascading power interruptions
Narain G. Hingorani, Karl E. Stahlkopf
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Applied Optics, 1976
High power laser beams propagating in the atmosphere are subjected to a variety of effects, the most important of which are absorption, scattering, turbulence induced beam spreading and wander, thermal blooming, and gas breakdown. In this paper simplified models are used to show how the various atmospheric effects interrelate and impact on the best ...
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High power laser beams propagating in the atmosphere are subjected to a variety of effects, the most important of which are absorption, scattering, turbulence induced beam spreading and wander, thermal blooming, and gas breakdown. In this paper simplified models are used to show how the various atmospheric effects interrelate and impact on the best ...
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Electrical Engineering, 1936
A brief outline of the essential characteristics of high power audio transformers for class B amplification (tubes connected in push-pull fashion with their grid voltages of such value that the anode current is zero when there is no signal) is given here together with a brief description of the units used in the third and fourth stages of ...
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A brief outline of the essential characteristics of high power audio transformers for class B amplification (tubes connected in push-pull fashion with their grid voltages of such value that the anode current is zero when there is no signal) is given here together with a brief description of the units used in the third and fourth stages of ...
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IEEE transactions on power electronics, 2018
In this paper, an enhancement-mode GaN high-electron mobility transistor (HEMT)-based 7.2-kW single-phase charger was built. Connecting three such single-phase modules to the three-phase grid, respectively, generates a three-phase ∼22-kW charger with the
Juncheng Lu +6 more
semanticscholar +1 more source
In this paper, an enhancement-mode GaN high-electron mobility transistor (HEMT)-based 7.2-kW single-phase charger was built. Connecting three such single-phase modules to the three-phase grid, respectively, generates a three-phase ∼22-kW charger with the
Juncheng Lu +6 more
semanticscholar +1 more source
High-powered magnets still require high-powered vigilance
Journal of Pediatric Surgery, 2022Ellen M. Encisco +2 more
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Communication & Sport, 2017
The 2015 Fédération Internationale de Football Association (FIFA) Women’s World Cup final, won by the United States women’s national team (USWNT), was the most-watched soccer match (men or women) in U.S. history. This quantitative content analysis examined 491 American newspaper front pages published on July 6, 2015, the day after the USWNT win ...
Travis R. Bell, Roxane Coche
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The 2015 Fédération Internationale de Football Association (FIFA) Women’s World Cup final, won by the United States women’s national team (USWNT), was the most-watched soccer match (men or women) in U.S. history. This quantitative content analysis examined 491 American newspaper front pages published on July 6, 2015, the day after the USWNT win ...
Travis R. Bell, Roxane Coche
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Le Journal de Physique IV, 1999
This paper presents some important specificities of high power accelerators. A general overview of some projects is given, followed by some basic recalls in accelerators physics. These recalls are used to describe the fundamental mecanisms leading to emittance growth and halo generation in high intensity beams.
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This paper presents some important specificities of high power accelerators. A general overview of some projects is given, followed by some basic recalls in accelerators physics. These recalls are used to describe the fundamental mecanisms leading to emittance growth and halo generation in high intensity beams.
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MRS Proceedings, 1994
ABSTRACTHigh power gyrotrons have been developed for application to plasma heating in the program of magnetically confined nuclear fusion research. Gyrotron power levels of up to 1 MW in long pulse operation (>ls) and up to 200 kW in true continuous operation (CW) have been demonstrated at frequencies in the 8 to 140 GHz range.
R. J. Temkin, K. E. Kreischer
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ABSTRACTHigh power gyrotrons have been developed for application to plasma heating in the program of magnetically confined nuclear fusion research. Gyrotron power levels of up to 1 MW in long pulse operation (>ls) and up to 200 kW in true continuous operation (CW) have been demonstrated at frequencies in the 8 to 140 GHz range.
R. J. Temkin, K. E. Kreischer
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IEEE Transactions on Nuclear Science, 1965
This paper will review the evolution of high power klystrons and their applications in supplying rf energy for linear accelerators. Other types of possible rf sources were considered for SLAC, and the reasons for the selection of klystrons will be given.
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This paper will review the evolution of high power klystrons and their applications in supplying rf energy for linear accelerators. Other types of possible rf sources were considered for SLAC, and the reasons for the selection of klystrons will be given.
openaire +1 more source