Patent ID: 8295024
Filing Date: 2012-10-23
Classification: H02H

Abstract:
1. A surge energy transfer circuit, comprising: an input terminal; an output terminal; a surge absorption unit connected to the input terminal and having at least two surge protection devices (SPD) for absorbing a percentage of an input surge energy; a surge energy transfer unit connected to the surge absorption unit, formed by at least two inductors having a functionally identical inductances or at least two groups of inductors having a functionally identical inductances for temporarily storing a remaining percentage of the input surge energy and converting the remaining portion of the input surge energy into a voltage, wherein the percentage of the converted surge energy out of the input surge energy is equal to the percentage of a figure subtracting the inputted surge energy absorbed by the surge absorption unit from the inputted surge energy out of the inputted surge energy; a surge energy charge and discharge unit connected with the surge energy transfer unit and the output terminal, and having at least one high voltage capacitor or at least one group of high voltage capacitors to charge and discharge the voltage converted from the remaining percentage of the input surge energy, wherein a time duration elapsed for charging or discharging is determined by a magnitude of the selected high voltage capacitor, and an equipotential grounding unit connected to the surge absorption unit, the surge transfer unit, the surge energy charge discharge unit, the input terminal and the output terminal, and having at least two SPDs having a functionally identical characteristics so as to maintain a constant voltage of the output terminal when the input surge energy is coupled through ground, thereby reducing the input surge energy and a remnant surge voltage represented by the converted form of voltage by serially connecting a circuit formed by the foregoing units to a path through which a surge goes through; wherein the two inductors are connected in parallel between the input terminal and the output terminal; the high voltage capacitors are connected with one end of each one of the two inductors connected to the output terminal; the surge energy absorption unit has two SPDs crossly connected with the two inductors, wherein two ends of each one of the two SPDs are respectively connected with one end of one the two inductors and one end of the other of the two inductors; the surge absorption unit is intersected with the two inductors at two nodes C the equipotential grounding unit has four SPDs having a functionally identical characteristics, wherein each one of the four SPDs is connected between each one of the four nodes C