Electricity: measuring and testing – Magnetic – Magnetometers
Patent
1997-10-10
1999-11-30
Snow, Walter E.
Electricity: measuring and testing
Magnetic
Magnetometers
324 96, 324142, 359282, G01R 33032, G01R 1900, G02F 109
Patent
active
059948981
ABSTRACT:
An apparatus and method for measuring instantaneous power using a magneto-optic Kerr effect sensor are disclosed. The apparatus comprises and the method requires a magneto-optic Kerr effect magnetic field sensing element and an optical system including a light source, first and second polarizers, and a photoconductive detector. In a preferred embodiment, the sensing element and the optical system are arranged to sense the intensity of a magnetic field generated by current passing through a high voltage power line so as to provide an optical signal that is representative of the current to the photoconductive detector. A voltage signal is tapped off of the high voltage power line to provide a bias signal to the photoconductive detector. The photoconductive detector thereby effectively multiplies the optical current signal with the voltage signal so as to provide a photoconductive detector current signal that is proportional to instantaneous power passing through the high voltage power line.
REFERENCES:
patent: 4525668 (1985-06-01), Lienhard et al.
patent: 4896103 (1990-01-01), Shimanuki et a.
patent: 4956607 (1990-09-01), Abe et al.
DiMarzio Charles A.
McKnight Stephen W.
Oliver Steven A.
Northeastern University
Snow Walter E.
LandOfFree
Apparatus and method for measuring instantaneous power using a m does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for measuring instantaneous power using a m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for measuring instantaneous power using a m will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1677349