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:
Jun. 15, 2004
Filed:
Sep. 12, 2001
Applicant:
Inventors:
Robert L. Dickerman, Northfield, MA (US);
Terry M. Grayson, Granby, CT (US);
Assignee:
Alstom Technology Ltd, Baden, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 2/708 ;
U.S. Cl.
CPC ...
G01R 2/708 ;
Abstract
An apparatus for evaluating data representing the electrical characteristics of a combustion vessel, the combustion vessel being operable to combust a fuel. The apparatus includes a matrix of nodes arranged on an ohmic material of the combustion vessel, a wire A, B, A, B, connected to each respective node and a switch SW , SW connected to each wire and to a current source. A circuit A, B for reducing leakage currents uses an added series element, optimally a diode D , and feedback control of the voltage across the diode to a set point of zero volts to effectively reduce the off-state leakage current of each switch SW , SW