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:
Sep. 03, 2019
Filed:
Feb. 13, 2017
Nec Corporation, Minato-ku, Tokyo, JP;
Yoshinari Takigawa, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
In order to suppress both large current and arc discharge during hot switching, a grounding circuit includes a first relay, a second relay, and a third relay, a first resistance connected in series with the first relay and is capable of connecting the feeding path to the ground, and a voltage divider connected in series with the second relay and the third relay and is connectable in such a way as to divide voltage between the feeding path and the ground, the third relay being disposed at a point at which the voltage is divided, and when the feeding path is to be connected to the ground, the feeding path is connected to the ground via the first resistance by the first relay, the voltage divider is connected in parallel with the first relay and the first resistance, and a connection to the ground is cut off.