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:
Apr. 14, 2020
Filed:
Feb. 22, 2016
Applicant:
Energizer Brands, Llc, Saint Louis, MO (US);
Inventors:
Michael J. Brandon, II, North Ridgeville, OH (US);
David Spartano, Brunswick, OH (US);
Assignee:
Energizer Brands, LLC, Saint Louis, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 33/08 (2020.01); H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 45/37 (2020.01); H05B 45/395 (2020.01); G01R 19/165 (2006.01);
U.S. Cl.
CPC ...
H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 45/37 (2020.01); H05B 45/395 (2020.01); G01R 19/16542 (2013.01);
Abstract
A light-emitting diode (LED) driver circuit monitors battery input current by way of a feedback resistor. The observed resistor voltage is provided to a regulator circuit which adjusts the current provided to the LED so as to hold the battery current substantially constant.