Apparatus for protecting electronic equipment by detecting thunder

摘要

A protection apparatus for protecting electrical and electronic equipment from damage due to disturbances introduced by external electrical conductors. The apparatus employs one or more of the following methods to switch an interfacing relay from the operating state to the protected state: Surge protection; detection of the sound of an approaching thunderstorm. The apparatus may include a means to manually select either the protected state in which the connected equipment is disconnected from the external conductors, the override state in which the connected equipment is connected to the external conductors and the sensing systems are overridden and the normal operating state in which the sensing systems are employed to automatically disconnect the equipment in the event of a disturbance.