| Patent Number |
Title Of Patent |
Date Issued |
| 7321226 |
Temperature compensated and self-calibrated current sensor using reference current |
January 22, 2008 |
| A method is described to provide temperature compensation and self-calibration of a current sensor based on a plurality of magnetic field sensors positioned around a current carrying conductor. A reference electrical current carried by a conductor positioned within the sensing window |
| 7304872 |
Power supply |
December 4, 2007 |
| A modular, low weight impedance dropping power supply with battery backup is disclosed that can be connected to a high voltage AC source and provide electrical power at a lower voltage. The design can be scaled over a wide range of input voltages and over a wide range of output volta |
| 7279885 |
Temperature compensated current sensor using reference magnetic field |
October 9, 2007 |
| A method is described to provide temperature compensation and self-calibration of a current sensor based on a plurality of magnetic field sensors positioned around a current carrying conductor. A reference magnetic field generated within the current sensor housing is detected by a se |
| 7279884 |
Temperature compensated and self-calibrated current sensor using reference magnetic field |
October 9, 2007 |
| A method is described to provide temperature compensation and self-calibration of a current sensor based on a plurality of magnetic field sensors positioned around a current carrying conductor. A reference magnetic field generated within the current sensor housing is detected by the |
| 7274186 |
Temperature compensated and self-calibrated current sensor |
September 25, 2007 |
| A method is described to provide temperature compensation and reduction of drift due to aging for a current sensor based on a plurality of magnetic field sensors positioned around a current carrying conductor. The offset voltage signal generated by each magnetic field sensor is used to c |
| 7164263 |
Current sensor |
January 16, 2007 |
| A current sensor is described that uses a plurality of magnetic field sensors positioned around a current carrying conductor. The sensor can be hinged to allow clamping to a conductor. The current sensor provides high measurement accuracy for both DC and AC currents, and is substantially |
| 7129693 |
Modular voltage sensor |
October 31, 2006 |
| A voltage sensor is described that consists of a plurality of identical series-connected sections, where each section is comprised of an arrangement of impedance elements. The sensor is optimized to provide an output ratio that is substantially immune to changes in voltage, temperatu |
| 7123032 |
Voltage sensor and dielectric material |
October 17, 2006 |
| A voltage sensor is described that consists of an arrangement of impedance elements. The sensor is optimized to provide an output ratio that is substantially immune to changes in voltage, temperature variations or aging. Also disclosed is a material with a large and stable dielectric |
| 6380725 |
Voltage sensor |
April 30, 2002 |
| A voltage sensor for measuring the voltage on high voltage lines is formed by an electrically isolating-section of material with resistive shielding (RS) that structures the electric field generated by a voltage difference between the two ends of the isolating-section and provides shield |
| 5739936 |
Electro-optical circuit for signal transmission |
April 14, 1998 |
| An electro optical circuit for transmitting an information bearing signal, such as a signal in the RF, AF or microwave frequency domains, to a predetermined location includes a laser for generating coherent light to be used as a carrier, and an electro optical modulator for receiving the |
