Patent ID: 9692226
Date: 2017-06-27
CPC Classifications: H02H,H02J,H02M,H03K,Y02E

Claim:
1. An extinguishing branch for an electrical circuit, the extinguishing branch comprising: a snubber circuit including an energy storage limb, wherein the energy storage limb includes first and second energy storage limb portions separated by a first junction to define a first voltage divider, and each energy storage limb portion includes at least one energy storage device; and an arrester limb connected across the energy storage limb, wherein the arrester limb includes first and second arrester limb portions separated by a second junction to define a second voltage divider, and each arrester limb portion includes at least one arrester element, wherein the first and second junctions are connected to define a voltage divider bridge, and the voltage divider bridge is electrically coupleable to the electrical circuit for providing, in use, a driving voltage to drive the electrical circuit, wherein a first voltage division ratio of the first voltage divider is equal to a ratio of an impedance of the first energy storage limb portion to a sum of impedances of the first and second energy storage limb portions, and a second voltage division ratio of the second voltage divider is equal to a ratio of an impedance of the first arrester limb portion to a sum of impedances of the first and second arrester limb portions, and wherein the first voltage division ratio is different in magnitude to the second voltage division ratio and/or wherein the impedance of the first energy storage limb portion is larger than the impedance of the second energy storage limb portion.