Battery running low on you're mobile phone? Sounds like it's time for a walk. That's the reality of the nPower PEG, a personal energy generator that, like battery-less flashlights which require shaking to produce energy, puts Michael Faraday's Principle of Electromagnetic Induction to work to create a totally renewable energy source for charging your handheld electronic devices.
移动电话快没电了？似乎该外出散一次步了，摇摇发电机便有了用武之地——它是一种个人能源生成器。跟晃动生电的无电手电筒一样，摇摇发电机的工作原理也利用了迈克尔·法拉第的电磁感应定律。它能够为手持电子设备提供完全可再生的充电能源。

The 9" long, 9 ounce device works when you are in motion--just plug in your mobile device, place the nPower PEG vertically in your bag or on your hip and go for a walk or run. The kinetic energy from this movement is harvested to deliver charge at the same rate as a wall charger. This translates to an 80% for most devices in an hour of walking according to the manufacturer.
这种设备长9英寸，重9盎司，可在你运动过程中发电——只需把移动设备插到摇摇发电机上，并把发电机垂直地放在包里或挂在后腰部，然后走动或跑动即可。发电机利用这一运动过程中产生的动能来充电，充电速度跟壁式充电器一样。据制造商介绍，对于大多数设备来说，行走一个小时可以充80%的电。

Interchangeable adapters are available for charging over 90% of handheld electronic devices--media players, phones, digital cameras and GPS units. There's also plans for a range of arm bands and belt clips to hold the charger while you are on the move.
超过90%的手持电子设备，如媒体播放机、电话、数码相机和全球定位系统装置，可用设备上的可互换适配器充电。此外，（制造商）还打算设计一系列臂带和腰带夹来托住或夹住充电器，以便在运动时使用。

Could it be smaller? Technically yes, but because the weight of the device is relative to the amount of power produced, the manufacturer has aimed to strike a balance between portability and power output (which is up to 4 Watts) in designing the nPower PEG. Of course it could also be bigger--and produce more power--and this scalability opens up plenty of avenues for different types of products incorporating the technology.
它还能设计成更小吗？技术上是可以的，但是由于设备的重量与它所产生的电量相关，因此在设计摇摇发电机时，制造商力求在设备的便携性和输出功率（最大4瓦）之间取得平衡。当然，它也可以更大并产生更多的电量，这种可扩展性为不同类型的产品采用这种技术提供了诸多途径。

It's a completely recyclable product and even if you're at home you can reduce your carbon footprint and get some exercise at the same time. Great idea!
它是一个完全可循环利用的产品。即便在家里，你也可以减少你的“碳足迹”，同时还能做做运动。非常棒的创意！