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. 19, 2020
Filed:
Nov. 17, 2017
Applicant:
Sonion Nederland B.v., Hoofddorp, NL;
Inventor:
Adrianus Maria Lafort, Hoofddorp, NL;
Assignee:
Sonion Nederland B.V., Hoofddorp, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01); G01H 11/06 (2006.01); H04R 3/02 (2006.01); H03F 1/34 (2006.01); H03F 1/08 (2006.01); H03F 3/181 (2006.01); H04R 3/00 (2006.01);
U.S. Cl.
CPC ...
G01H 11/06 (2013.01); H03F 1/08 (2013.01); H03F 1/34 (2013.01); H03F 3/181 (2013.01); H03F 3/45183 (2013.01); H03F 3/45215 (2013.01); H03F 2200/129 (2013.01); H03F 2200/144 (2013.01); H03F 2200/171 (2013.01); H03F 2200/258 (2013.01); H03F 2200/42 (2013.01); H03F 2203/45026 (2013.01); H03F 2203/45034 (2013.01); H03F 2203/45512 (2013.01); H04R 3/00 (2013.01);
Abstract
A sensing system with an AC feedback to the non-signal and non-biased terminal of the transducer. An impedance element, such as two anti-parallel diodes, are provided at the amplifier input, and the amplifier gain is negative and has a size sufficient to ensure that the input on the one terminal does not exceed the forward voltage of the diode.