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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]
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.
The offline/standby UPS offers only the most basic features, providing surge protection and battery backup. The protected equipment is normally connected directly to incoming utility power. When the incoming voltage falls below or rises above a predetermined level the UPS turns on its internal DC-AC inverter circuitry, which is powered from an ...
APC, Australian Personal Computer magazine APC III or Advanced Personal Computer, a 1983 NEC microcomputer APC by Schneider Electric , formerly American Power Conversion Corporation or simply APC , a manufacturer of uninterruptible power supplies, electronics peripherals and data center products
A valve-regulated lead-acid battery is a battery type that is popular in telecommunications network environments as a reliable backup power source. VRLA batteries are used in the outside plant at locations such as Controlled Environmental Vaults (CEVs), Electronic Equipment Enclosures (EEEs), and huts, and in uncontrolled structures such as ...
The Simba Light Combat Vehicle (LCV) was designed by GKN primarily for export market sales, originally meant to complement the GKN Saxon. [1] A prototype was first displayed in 1978 at the Aldershot Exhibition. [4]
The manual back up system permits the crew to aim and fire the weapons should the electrical/hydraulic subsystems fail. [ 51 ] At a range of 2,000 m (6,600 ft), hit probabilities of better than 70% from a moving M60A1 were obtained in Aberdeen [ 51 ] test results while without a stabilizer it was essentially zero.
This device was a plug-compatible replacement for the IBM 2305 hard drive, initially using charge-coupled devices for storage and later switching to dynamic random-access memory (DRAM). The STC 4305 was significantly faster than its mechanical counterparts and cost around $400,000 for a 45 MB capacity. [ 116 ]