The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2019
Filed:
Feb. 03, 2016
Fdk Corporation, Tokyo, JP;
Norio Fukui, Tokyo, JP;
FDK CORPORATION, Tokyo, JP;
Abstract
A load current control apparatus according to the present invention includes a current detecting circuit adapted to detect an electric current on a power supply line used to supply electric power from a power supply unit to a load device, a field effect transistor adapted to turn on and off the power supply line, and a controller adapted to control the field effect transistor according to the electric current on the power supply line, in which the controller starts counting time from a time point when the electric current on the power supply line exceeds the overcurrent detection threshold while maintaining the field effect transistor in an ON state, sets an upper limit time corresponding to the electric current on the power supply line at that time as a time threshold based on a relationship between electric current and time set beforehand according to electrical characteristics of the field effect transistor, and turns off the field effect transistor when a time period corresponding to the time threshold elapses.