Results 251 to 260 of about 2,660,702 (309)
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High power ultrasound standard
The Journal of the Acoustical Society of America, 2002A sensitive radiation force balance for laboratory measurement of ultrasonic power is presented. The principle of the system is based on measuring the ultrasonic radiation force exerted on a conical float suspended in water. Technical details of the implementation of the economically attractive system are described.
Wong, G. S.K., Wu, L.
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IEEE Transactions on Microwave Theory and Techniques, 1961
The various circuit arrangements used in duplexers are analyzed in terms of their power-handling ability in two situations: first, where the bandwidth is narrow so that insertion loss determines maximum Q, and second, where large bandwidths are required and the maximum Q is determined by available Q band-width products.
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The various circuit arrangements used in duplexers are analyzed in terms of their power-handling ability in two situations: first, where the bandwidth is narrow so that insertion loss determines maximum Q, and second, where large bandwidths are required and the maximum Q is determined by available Q band-width products.
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SPIE Proceedings, 1998
The discharge conditions of the multi-atmospheric e-beam sustained Ar-Xe laser are investigated. It is observed that the quasi-stationary period of a laser pulse depends on the e-beam current, the discharge power deposition and the gas density. The laser efficiency can be as high as 8%.
Witteman, W.J. +3 more
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The discharge conditions of the multi-atmospheric e-beam sustained Ar-Xe laser are investigated. It is observed that the quasi-stationary period of a laser pulse depends on the e-beam current, the discharge power deposition and the gas density. The laser efficiency can be as high as 8%.
Witteman, W.J. +3 more
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Soviet Physics Uspekhi, 1962
Electronic processes are used on an ever expanding scale in modern electrical engineering. Yet there is one field where electronics still finds little application. Indeed, electronic processes are widely used in measuring instruments (cathode ray oscillographs, photocells, high-frequency measuring devices, amplifiers, etc.), in cybernetics (automation,
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Electronic processes are used on an ever expanding scale in modern electrical engineering. Yet there is one field where electronics still finds little application. Indeed, electronic processes are widely used in measuring instruments (cathode ray oscillographs, photocells, high-frequency measuring devices, amplifiers, etc.), in cybernetics (automation,
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2006 IEEE LEOS Annual Meeting Conference Proceedings, 2004
The 20-year-evolution of high-power laser diodes with a multitude of device designs that explore various practical applications is presented. The four major applications for high-power diode lasers, namely pumps for EDFAs, YAG rods, disk lasers and fiber lasers have a tremendous impact on the selection process in this evolution.
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The 20-year-evolution of high-power laser diodes with a multitude of device designs that explore various practical applications is presented. The four major applications for high-power diode lasers, namely pumps for EDFAs, YAG rods, disk lasers and fiber lasers have a tremendous impact on the selection process in this evolution.
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IEEE Transactions on Microwave Theory and Techniques, 1958
In order to obtain filters capable of handling very high power, the use of radial lines and uniform line discontinuities was investigated as the most promising approach. In this connection, it was necessary to consider equivalent circuit and interaction effects for H-mode radial line mated at each end to uniform TE 10 waveguide for taper angles of 45 ...
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In order to obtain filters capable of handling very high power, the use of radial lines and uniform line discontinuities was investigated as the most promising approach. In this connection, it was necessary to consider equivalent circuit and interaction effects for H-mode radial line mated at each end to uniform TE 10 waveguide for taper angles of 45 ...
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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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High-powered magnets still require high-powered vigilance
Journal of Pediatric Surgery, 2022Ellen M. Encisco +2 more
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