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:
Oct. 03, 2006
Filed:
Jun. 15, 2004
Juan Antonio Sabate, Gansevoort, NY (US);
Richard S. Zhang, Rexford, NY (US);
Luis Jose Garces, Niskayuna, NY (US);
Paul Michael Szczesny, Ballston Lake, NY (US);
Qiming LI, Shanghai, CN;
William Frederick Wirth, Johnson Creek, WI (US);
Juan Antonio Sabate, Gansevoort, NY (US);
Richard S. Zhang, Rexford, NY (US);
Luis Jose Garces, Niskayuna, NY (US);
Paul Michael Szczesny, Ballston Lake, NY (US);
Qiming Li, Shanghai, CN;
William Frederick Wirth, Johnson Creek, WI (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A gradient amplifier arrangement is described that comprises a gradient amplifier power stage. The device may be employed to provide a current to a gradient coil, as in a MRI system. The circuitry disclosed includes a series coupling of a first bridge amplifier operating at a first voltage, a second bridge amplifier operating at a second voltage, a third bridge amplifier operating at a third voltage, and a gradient amplifier control stage. The amplifiers may provide output voltages at different levels, and may be switched at different times and frequencies to provide a range of output voltage and current levels.