Patent ID: 7079368
Filing Date: 2006-07-18
Classification: H03K

Abstract:
1. An electrical resource device with overcurrent protection comprising: a semiconductor element for controlling a flow of current supplied by an electrical resource via wiring; a current detecting portion for detecting the current flowing in the wiring; and a current restriction portion for restricting the current to a level below a predetermined overcurrent restriction threshold while permitting the current to continue to flow by controlling the semiconductor element when the current detected by the current detecting portion exceeds the predetermined overcurrent restriction threshold; and a threshold determination portion for determining the overcurrent restriction threshold, the threshold determination portion including the threshold determination portion determining the first threshold as the overcurrent restriction threshold until the delay circuit outputs the delay signal to the threshold changing circuit when a second predetermined time (T wherein the predetermined overcurrent restriction threshold is defined based on a relationship between time and a destruction current amount by which the wiring may be destroyed, and is determined to be under the destruction current.