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https://drivepatents.com/patents/1084313 · 1 Sep 2004
The circuit has a converter unit (2) for converting an input voltage (VE) into an output voltage (VA) with a defined output potential and a capacitor (5) for providing an input if the input voltage fails so that the output voltage is held for a defined per...
https://drivepatents.com/patents/1109463 · 10 Oct 2001
The present invention provides a space-saving and low-cost emergency power system, which can be installed on a narrow place having limited space and employs a battery that is long in service life and low in frequency of replacement. This emergency power sy...
https://drivepatents.com/patents/1111071 · 8 Aug 2001
It is an object of the present invention to provide an uninterruptible switching regulator with which smaller size and lower cost can be achieved while the power supply efficiency is raised, which is accomplished by the effective utilization of an RCC type...