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Now showing items 11-18 of 18
ARC spectral analysis system
(United States. Patent and Trademark Office, 1996-11-26)
A method and apparatus are provided for detecting an arcing fault on a power line carrying a load current. The apparatus monitors and analyzes the load current to obtain frequency components. The analyzed load current is ...
Synthesis and application of alkyl-substituted dibenzofurans as antitumorigenic agents
(United States. Patent and Trademark Office, 1996-05-14)
Provided is a method of inhibiting estrogen activity by administering a biologically active amount of a substituted dibenzofuran or substituted dibenzodioxin.
Low noise and narrow linewidth external cavity semiconductor laser for coherent frequency and time domain reflectometry
(United States. Patent and Trademark Office, 1996-04-23)
A semiconductor laser (10) having an external cavity used for coherent frequency and time domain reflectometry is provided. The laser (10) provides a very stable single longitudinal mode characteristic, a very narrow lasing ...
Active harmonic power filter apparatus and method
(United States. Patent and Trademark Office, 1996-10-22)
Described is an active filter (10) for removing harmonic currents from a neutral wire (24) to reduce the current In in the neutral wire. The filter (10) typically is located away from the source (26) and near the load (28). ...
Expert system for detecting high impedance faults
(United States. Patent and Trademark Office, 1996-08-27)
An expert detection system includes a method and apparatus for detecting high impedance faults occurring on a distribution circuit coupled to an AC power source. Based upon an expert's knowledge of high impedance fault ...
Randomness fault detection system
(United States. Patent and Trademark Office, 1996-01-16)
A method and apparatus are provided for detecting a fault on a power line carrying a line parameter such as a load current. The apparatus monitors and analyzes the load current to obtain an energy value. The energy value ...
High purity aluminum conductor used at ultra low temperature
(United States. Patent and Trademark Office, 1996-11-12)
The aluminum conductor having increase of its electric resistivity kept small at ultra low temperature of 30° K. or lower even after cyclic strain is given at ultra low temperature, by controlling the crystal structure of ...
Signal conditioning unit for fiber optic sensors
(United States. Patent and Trademark Office, 1996-09-17)
Apparatus and method (10, 50) for determining the value of a measurand measured by a fiber optic interferometer sensor (24, 72, 110) is provided. The apparatus includes a light source (16, 58, 102) emitting a light having ...