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. 11, 2025
Filed:
Dec. 31, 2022
Applicant:
Knowles Electronics, Llc, Itasca, IL (US);
Inventors:
Assignee:
Knowles Electronics, LLC, Itasca, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H04R 19/04 (2006.01); H03F 3/45 (2006.01); H04R 1/04 (2006.01);
U.S. Cl.
CPC ...
H04R 19/04 (2013.01); H03F 3/45475 (2013.01); H04R 1/04 (2013.01); H03F 2200/165 (2013.01); H04R 2201/003 (2013.01);
Abstract
A capacitive sensor assembly is disclosed, including a capacitive motor coupled to a charge pump circuit via a low pass filter, and a frontend amplifier circuit having an input coupled to the capacitive motor interface and an output coupled to an output of the electrical circuit. An injection current source (ICS) is coupled to the charge pump circuit output and configured to control voltage across a diode-based resistive element of the low pass filter during a transient startup phase of the charge pump circuit, wherein a settling time of the charge pump is reduced.