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:
May. 03, 2016
Filed:
Jan. 03, 2014
Applicant:
Emerson Electric Co., St. Louis, MO (US);
Inventors:
Cuiyun Chen, Jiangsu, CN;
Xingeng Zhou, Jiangsu, CN;
Assignee:
Emerson Electric Co., St. Louis, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 47/00 (2006.01); H01H 47/32 (2006.01); H01H 47/22 (2006.01); H02H 3/00 (2006.01); H02H 7/00 (2006.01); H02H 9/08 (2006.01); H01H 9/00 (2006.01); H01H 51/22 (2006.01); H01H 47/02 (2006.01);
U.S. Cl.
CPC ...
H01H 47/325 (2013.01); H01H 47/22 (2013.01); H01H 47/02 (2013.01);
Abstract
Disclosed are exemplary embodiments of relay drive circuits. In an exemplary embodiment, a relay drive circuit generally includes a first diode, a second diode, a third diode, a first transistor, a second transistor, a first capacitor, and a second capacitor. The relay drive circuit is operable to transform an AC voltage to a DC voltage, and then use the DC voltage to control on/off of the relay.