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The Smart-UPS is a series of enterprise-level uninterruptible power supplies (UPS) made by American Power Conversion (APC). [1] Most of the units have a SmartSlot (with the exception of SC and SMC series) which accepts an optional interface card providing features ranging from network connectivity to temperature and humidity monitoring. [2]
A UPS designed for powering DC equipment is very similar to an online UPS, except that it does not need an output inverter. Also, if the UPS's battery voltage is matched with the voltage the device needs, the device's power supply will not be needed either. Since one or more power conversion steps are eliminated, this increases efficiency and ...
APC was founded in 1981 by three MIT Lincoln Lab electronic power engineers. Originally, the engineers focused on solar power research and development. [2] When government funding for their research ended, APC shifted its focus to power protection by introducing its first UPS in 1984.
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Battery-powered portable computers had just a 2% worldwide market share in 1986. [12] However, laptops have become increasingly popular, both for business and personal use. [ 13 ] Around 109 million notebook PCs shipped worldwide in 2007, a growth of 33% compared to 2006. [ 14 ]
Manhandling a gun into position during training at Fort Benning, 1942.Note the raised wheel segments. The 37 mm gun M3 is the first dedicated anti-tank gun fielded by United States forces in numbers.
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