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. 01, 2014
Filed:
Nov. 08, 2011
Applicants:
Brian Johansen, Hillsboro, OR (US);
Brandon John Mccurry, Portland, OR (US);
Inventors:
Brian Johansen, Hillsboro, OR (US);
Brandon John McCurry, Portland, OR (US);
Assignee:
Electro Scientific Industries, Inc., Portland, OR (US);
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/12 (2006.01); G01R 31/08 (2006.01); G01R 27/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
Embodiments of an apparatus for measuring the leakage current of capacitive components is taught. One embodiment includes a first stage amplifier configured to receive an input from a serially-connected capacitive component at an inverting input and a feedback resistor in a feedback path of the first stage amplifier. A resistance value of the feedback resistor is programmable based on an expected value of the leakage current and a corresponding voltage output.