Results 221 to 230 of about 2,310,681 (269)
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High‐powered automobile stereos
Otolaryngology–Head and Neck Surgery, 1993We measured the owner‐adjusted acoustic outputs of 10 automobile stereo systems, with power ratings ranging between 150 and 600 watts. The sound levels ranged from 107 to 138 dB SPL and 84 to 108 dBA. Most of the high‐Intensity sound was in the 31, 62, and 125 Hz center‐frequency octave bands.
K L, Ramsey, F B, Simmons
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Conference on Lasers and Electro-Optics, 2016
We present novel fast MOVPE-grown SESAMs with enhanced damage threshold and surface quality suitable for power-scaling of modelocked laser oscillators to enable ultrafast lasers in the kilowatt average power regime.
Alfieri Cesare +8 more
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We present novel fast MOVPE-grown SESAMs with enhanced damage threshold and surface quality suitable for power-scaling of modelocked laser oscillators to enable ultrafast lasers in the kilowatt average power regime.
Alfieri Cesare +8 more
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A High Power Welding Rectifier
Transactions of the American Institute of Electrical Engineers, 1934A welding rectifier embodying the ``ignitron'' principle, a recent development in a program of research on mercury arc rectifiers, provides predetermined welding currents for periods of time variable in steps of 20 sec, or less if desired. This paper describes the design and operation of the ``ignitron'' and illustrates its applicability to the ...
Daniel Silverman, J . H. Cox
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Low-power chips for high-powered handhelds
Computer, 2003Handheld devices have added more and more functionality over the past couple of years. Advances in wireless networks have contributed to this trend. However, the major factor has been the development of more powerful mobile processors. New mobile chips have given smart cellular phones, PDAs, and intelligent pagers the capability to run faster, access ...
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Techniques for high power microwave sources at high average power
IEEE Transactions on Plasma Science, 1993Experiments on CLIA (compact linear induction accelerator), capable of generating 750 kV and 10 kA into a matched load using magnetic switching to produce 60 ns long pulses, are described. As a first application, the authors used CLIA to drive a water-cooled L-band magnetron at repetition rates as high as 250 Hz with no breakdown or pulse shortening ...
J.N. Benford +3 more
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ESSCIRC 2008 - 34th European Solid-State Circuits Conference, 2008
An overview is presented of recent developments in the analog boundaries of the audio chain. The main focus is on class-D amplifiers that are by now almost standard in consumer applications and emerging in automotive and mobile applications as well. Further, an overview of the state-of-the-art in A/D and D/A conversion is given.
Marco Berkhout +2 more
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An overview is presented of recent developments in the analog boundaries of the audio chain. The main focus is on class-D amplifiers that are by now almost standard in consumer applications and emerging in automotive and mobile applications as well. Further, an overview of the state-of-the-art in A/D and D/A conversion is given.
Marco Berkhout +2 more
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High performance at affordable power
IEEE Micro, 2005Regardless of what chip a team is designing, energy efficiency is probably one of the most important criteria. Achieving high performance at affordable power (and therefore, cost) is the overall system goal across a whole range of products that serve the home, entertainment, scientific, and commercial-enterprise segments of the information technology ...
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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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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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Optical Fiber Communication Conference, 2017
• Optical fibers are an extraordinary active medium… • …but thermal effects cannot be simply neglected anymore. • Recently a serious new limitation has been discovered: Mode Instabilities. • This has quickly become the most limiting factor for the futher scaling of fiber systems.
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• Optical fibers are an extraordinary active medium… • …but thermal effects cannot be simply neglected anymore. • Recently a serious new limitation has been discovered: Mode Instabilities. • This has quickly become the most limiting factor for the futher scaling of fiber systems.
openaire +2 more sources