Gregory A Woods

6492800, Dec 10, 2002

Sep 20, 2000

09/667116

Gregory K. Woods - Cornelius OR
Todd W. Renak - Idaho Falls ID
James R. Davidson - Idaho Falls ID
Thomas M. Crawford - Idaho Falls ID

Bechtel BWXT Idaho, LLC - Idaho Falls ID

G01R 3100

324 96

The invention is a miniature electro-optic voltage sensor system capable of accurate operation at high voltages without use of the dedicated voltage dividing hardware typically found in the prior art. The invention achieves voltage measurement without significant error contributions from neighboring conductors or environmental perturbations. The invention employs a transmitter, a sensor, a detector, and a signal processor. The transmitter produces a beam of electromagnetic radiation which is routed into the sensor. Within the sensor the beam undergoes the Pockels electro-optic effect. The electro-optic effect produces a modulation of the beams polarization, which is in turn converted to a pair of independent conversely-amplitude-modulated signals, from which the voltage of the E-field is determined by the signal processor. The use of converse AM signals enables the signal processor to better distinguish signal from noise. The sensor converts the beam by splitting the beam in accordance with the axes of the beams polarization state (an ellipse) into at least two AM signals.

62592858, Jul 10, 2001

Dec 5, 1997

8/985982

Gregory K. Woods - Cornelius OR

Intel Corporation - Santa Clara CA

H03L 700

327143

A circuit includes a fixed voltage drop circuit, a delay circuit, and a buffer. The delay circuit 13 coupled to the fixed voltage drop circuit, and the buffer 13 coupled to the delay circuit. The buffer has an activation voltage and is adapted to activate when the output of the delay circuit is less than the activation voltage. A method for detecting the loss of a power supply voltage includes coupling the power supply to a fixed voltage drop element to provide a first voltage at an output of the fixed voltage drop element. The first voltage is delayed to provide a second voltage, and the second voltage is provided to a buffer having an activation voltage. A reset signal is asserted at an output of the buffer when the second voltage is less than the activation voltage.

61247065, Sep 26, 2000

Jun 6, 1997

8/870512

Gregory K. Woods - Cornelius OR
Todd W. Renak - Idaho Falls ID
Thomas M. Crawford - Idaho Falls ID
James R. Davidson - Idaho Falls ID

Bechtel BWXT Idaho, LLC - Idaho Falls ID

G01R 3100

324 96

A miniature electro-optic voltage sensor system capable of accurate operation at high voltages without use of the dedicated voltage dividing hardware. The invention achieves voltage measurement without significant error contributions from neighboring conductors or environmental perturbations. The invention employs a transmitter, a sensor, a detector, and a signal processor. The transmitter produces a beam of electromagnetic radiation which is routed into the sensor. Within the sensor the beam undergoes the Pockels electro-optic effect. The electro-optic effect produces a modulation of the beam's polarization, which is in turn converted to a pair of independent conversely-amplitude-modulated signals, from which the voltage of the E-field is determined by the signal processor. The use of converse AM signals enables the signal processor to better distinguish signal from noise. The sensor converts the beam by splitting the beam in accordance with the axes of the beam's polarization state (an ellipse) into at least two AM signals.