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.

Date of Patent:
Sep. 29, 2026

Filed:

Oct. 28, 2024
Applicant:

Applied Materials Israel Ltd., Rehovot, IL;

Inventor:

Alexey Mestezky, Rehovot, IL;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/25 (2006.01); G01R 19/165 (2006.01);
U.S. Cl.
CPC ...
G01R 31/252 (2013.01); G01R 19/16533 (2013.01);
Abstract

A measurement device for measuring a photocathode current of a photomultiplier tube, the measurement device includes: (a) a voltage amplifier configured to amplify a shunt resistor voltage proportional to the photocathode current; (b) a leakage tolerant circuit configured to generate a first leakage tolerant voltage, based on a first amplified voltage and a first reference voltage having an absolute value that exceeds an absolute value of a leakage associated with the measurement device; (c) a voltage to current transducer that is configured to convert the first leakage tolerant voltage to a first leakage tolerant current; and (d) an output unit that is configured to convert the first leakage tolerant current to an output voltage that is indicative of the photocathode current.


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