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Supercapacitors are energy storage elements, which could generally replace, or hybridized with electrochemical batteries. However, considering the properties of state-of-the-art devices, a designer could look at them as more useful components in a multitude of other applications. General properties of supercapacitors are very large capacitance, low equivalent series resistance and long time constant...
Their combination of large continuous energy ratings and very large time constants allows supercapacitors to be used in surge protection circuits. This fact, supported by recent research publications and laboratory tests, has assisted the authors to propose a new surge protection circuit topology known as the supercapacitor-assisted surge absorber (SCASA). This technique utilizes a multi-winding transformer,...
Compared to typical non-linear devices (NLD) used in surge protection circuits, which have energy absorption ratings applicable to milliseconds order durations, current supercapacitor families have large continuous energy storage capabilities. Based on the transient absorption properties of supercapacitors, confirmed in recent investigations, a supercapacitor based surge energy absorption technique...
With the International Technology Roadmap for Semiconductors predicting below-25nm feature-size VLSIs, powered by DC power supplies of less than 1V, protection against transients has become mandatory for modern electronic systems. Surge protection circuits are usually designed using non-linear devices such as metal oxide varistors and semiconductor devices and these devices are rated for short-term...
Supercapacitors (SCs) are capable of storing energy in the range of fractional joules to several thousands of joules despite their lower dc voltage ratings. Farad-order capacitances combined with milliohm-order equivalent series resistances provide time constants ranging from fractional seconds to seconds. Given these time constants, compared to the time durations of power line transients in the range...
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