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:
Mar. 30, 2021
Filed:
Apr. 01, 2020
Samsung Sdi Co., Ltd., Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A device for maintaining an operation state of a relay with a second voltage value that is less than a first voltage value, the first voltage value being an initial driving voltage for the relay, includes: a main switch to output an output voltage to the relay by switching an input voltage according to a main operating voltage that varies according to an ON-OFF state of a first switch; the first switch to adjust the main operating voltage according to a first operating voltage that varies according to an ON-OFF state of a second switch; the second switch to control the first operating voltage according to an output voltage of a comparator; the comparator to output the output voltage by comparing a reference voltage value with a voltage of a reference node; and a third switch to control the voltage of the reference node according to an input signal.