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:
Jul. 10, 1984
Filed:
Jun. 26, 1981
Koji Maeda, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An apparatus for detecting a voltage peak value and a current peak of value and for detecting the amount of time or phase angle deviation between the voltage peak of value and current peak point to thereby locate a fault in a power line system. A decision circuit detects a sampling number indicating the peak point. The output of the decision circuit is applied to counter circuits while the number of sampling times is counted according to a preset sampling period. The operation of the counter is stopped by an output signal from the decision circuit to thereby output a digital number representing how many sampling numbers correspond to the distance between the peak points of the voltage and current.