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:
Jan. 13, 2026
Filed:
Apr. 10, 2023
Mitsubishi Electric Corporation, Tokyo, JP;
Kazuhiro Nakata, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A filter device includes a filter circuit having an inductor connected between a DC power supply and a load, and a variable DC resistor connected in parallel to the inductor. The filter device further includes a power calculation circuit to acquire voltage information showing a DC voltage outputted from the filter circuit to the load, and current information showing a direct current outputted from the filter circuit to the load, and to calculate electric power consumption of the load from the voltage information and the current information, and a resistance value control circuit to control the resistance value of the variable DC resistor on the basis of the electric power consumption calculated by the power calculation circuit and the DC voltage.