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MJ power conditioning system (PCS) has been designed and built up for the present most advanced laser facility in China, which provides multi-megajoule pulsed excitation to drive more than 2000 flashlamps in the laser's main amplifiers. Design objective, compositions and structure, and the key design methods of PCS are introduced in this paper, as well as function requirements and design methods of...
The fabrication of embedded passives represents a promising solution for system in package (SiP) regarding the reduction of size and assembly costs. But the thermo-mechanical deformation caused by residual stress generated from embedded passives processing have a significant impact on reliability of embedded passives. Due to the complication of embedded passives processing, there are several challenges...
Light emitting diode (LED) as the new light source has the advantages of power saving, environment-friendly, long lifetime and no pollution compared with fluorescent and incandescent lights. But the disadvantage of LED is low light lumen that only 10%~20% input power transform into the light, and 80%~90% into the heat. The junction temperature of LED is so high as to induce the lifetime declining...
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