PURPOSE:To prevent the fault of a computer system serving as a load by switching a back-up battery to a saving battery for supply of power and also transmitting a saving process start signal to a load device when a power failure of an external power supply is detected together with the ...
PURPOSE:To simplify the circuitry by providing a series resistor and a sub DC switching circuit comprising switching elements which are turned ON to shortcircuit the series resistor under normal state while turned OFF to release the series resistor under abnormal state to the smoothing capacitor in ...
Uninterruptible power supply 专利名称：Uninterruptible power supply 发明人：UMEMOTO ARIHIRO,梅本 有裕,KUNISADA HIDEAKI,国貞 秀明,KAWAGUCHI TOSHIO,川口 敏雄 申请号：JP特願昭63-143349 申请日：19880610 公开号：JP第2949588号B2 公开日：19990913 专利内容由知识产权出版社提供 摘要：PURPOSE:To protect a ...
PURPOSE:To realize downsizing and weight reduction of uninterruptible power supply by compensating for power interruption through a battery section and feeding a load with power from an AC power supply. CONSTITUTION:When high voltage AC power is fed from an input side AC power supply 1, output vo...
PURPOSE:To enable remaining life of an electrolytic capacitor to be diagnosed without stopping a power supply device for a long time by detecting charging characteristics when the power supply device is operated without any load and by estimating electrostatic capacity of the electrolytic capacitor. CON...
摘要: PURPOSE: To provide a reliable, small-sized, lightweight, and low-cost uninterruptible power supply by performing the optimum design of a step-up means.收藏 引用 批量引用 报错 分享 文库来源 求助全文 UNINTERRUPTIBLE POWER SUPPLY 优质文献 ...
PURPOSE:To contrive to activate a battery at low temperature and to prevent said battery from overcharge at high temperature by bringing the DC output voltage of a power circuit charging said battery close to the recommended charging voltage curve of the battery with the change of the ambient tem...
PURPOSE:To regulate AC input without lowering input power factor and to feed a required output from an inverter by providing a chopper for boosting a DC voltage and feeding a DC voltage from a battery through the booster chopper to the inverter. CONSTITUTION:When detection result of a current ...
PURPOSE:To improve power factor and to deal with higher harmonics through a simple constitution by converting an normally inputted AC power through a converter circuit into a DC power which is then smoothed and stored in a storing unit, and inverting the DC power stored in the storing unit int...
PURPOSE:To obtain a power unit which is provided with a common line conituted by connecting one sides of AC input-output terminals and can be operated without fail even when a power failure occurs by constituting power unit in a simple circuit configuration composed of a pair of batteries. ...