Portable SYSTEMs rely on batteries, and total CIRCUIT POWER consumption is an important and often dominant design issue, and in some instances, more important than cost.
便携式的系统依靠电池，整个电路耗电是一个重要而又困扰设计的问题，它甚至比价格更为突出。
In this paper, the operation principles of the total system and power-amplifier circuit, design method of digital PWM hardware circuit and software are described, and.
文中着重阐述系统和功放电路的工作原理、数字脉宽调制器的硬件电路、软件设计方法，并给出实验结果。
In the light of the new design, Lumileds companies have 18 red led light source, including the loss of circuit, a total power consumption of 14 watts to generate the same optical effect.
而在新设计的灯中，Lumileds公司采用了18个红色led光源，包括电路损失在内，共耗电14瓦，即可产生同样的光效。
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