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:
Nov. 05, 2013
Filed:
Dec. 02, 2009
Eric N. Chikando, Raleigh, NC (US);
Brad E. Dillon, Raleigh, NC (US);
Tuan D. Ngo, Raleigh, NC (US);
William J. Roberts, Raleigh, NC (US);
Eric R. Schumann, Raleigh, NC (US);
Ronald L. Underwood, Raleigh, NC (US);
Eric N. Chikando, Raleigh, NC (US);
Brad E. Dillon, Raleigh, NC (US);
Tuan D. Ngo, Raleigh, NC (US);
William J. Roberts, Raleigh, NC (US);
Eric R. Schumann, Raleigh, NC (US);
Ronald L. Underwood, Raleigh, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Tuning a programmable power line filter, the power line filter including a live line, a neutral line, and a ground line connected to input terminals of the filter on an input side of the filter, the live line and the neutral line connected through inductors in the filter to output terminals on an output side of the filter, X-capacitors selectably connected through tuning switches between the live line and the neutral line, Y-capacitors selectably connected through tuning switches between the live line and ground and/or between the neutral line and ground, and a tuning control circuit connected to the tuning switches and selectably connected through one or more programming switches to the load, including measuring by the tuning control circuit the input impedance of the load and programming by the tuning control circuit the tuning switches in dependence upon the input impedance of the load.