Due to the merit of small volume, light weight and low cost, mobile generator is widely used as backup or mobile power supply.
移动发电机具有体积小、重量轻、成本低等优点，被广泛应用在需要备用和移动电源的场合。
With chopping principle, switching power supply is chosen as the DC power supply because of its small size, low weight and high efficiency.
论文采用直流斩波原理，利用体积小、重量轻、效率高、可靠性好的开关电源作为直流供电电源。
La Circuit Design class-H, power supply with synchronous rectification switching power supply, light weight, small size, especially suitable for mobile performance of anti-sound applications.
LA系列采用高效H类电路，电源采用同步整流的开关电源，重量轻、体积小，特别适合流动演出扩声应用。
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