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. 25, 2022
Filed:
Jun. 19, 2020
Applicant:
Facebook Technologies, Llc, Menlo Park, CA (US);
Inventor:
Ziv Magoz, Seattle, WA (US);
Assignee:
Facebook Technologies, LLC, Menlo Park, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H05B 45/37 (2020.01); G06F 1/10 (2006.01); H05B 45/00 (2020.01); H05B 47/16 (2020.01);
U.S. Cl.
CPC ...
H05B 45/37 (2020.01); G06F 1/10 (2013.01); H05B 45/00 (2020.01); H05B 47/16 (2020.01);
Abstract
A powering circuit for a diode light source includes an inductor charged through an on/off switch. The charging occurs during a charging cycle for a controllable amount of time when the on/off switch is closed. The energy of the charged inductor is used to power the semiconductor light source by opening the on/off switch. In such a driving configuration, the ringing is nearly constant and thus may be suppressed using an appropriately configured circuit.