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. 23, 2024
Filed:
May. 03, 2022
Applicant:
Littelfuse, Inc., Chicago, IL (US);
Inventor:
Bret R. Howe, Irvine, CA (US);
Assignee:
Littelfuse, Inc., Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/687 (2006.01); H01H 47/00 (2006.01); H02H 3/08 (2006.01); H02H 3/10 (2006.01); H02H 3/20 (2006.01); H03K 17/06 (2006.01); H03K 19/20 (2006.01);
U.S. Cl.
CPC ...
H03K 17/687 (2013.01); H03K 17/063 (2013.01); H03K 19/20 (2013.01); H03K 2217/0081 (2013.01);
Abstract
A relay circuit may include a solid state relay switch, coupled to an external voltage line and to an charging capacitor; and a solid state relay control circuit, coupled between the charging capacitor and the solid state relay switch. The solid state relay control circuit may be arranged to: turn the solid state relay switch to an OFF state when a capacitor voltage of the charging capacitor falls below a low threshold value; and change the solid state relay switch from the OFF state to an ON state when the capacitor voltage increases above a high threshold value.