Wide range low noise current sensor

Author

Richter, F. ; Sourkounis, C.

Author_Institution

Res. Group of Power Syst. Technol. & Power Mechatron., Ruhr-Univ. Bochum, Bochum

fYear

2008

fDate

1-3 Sept. 2008

Firstpage

1398

Lastpage

1401

Abstract

Compared to conventional current sensors, the proposed topology is advantageous because of its high resolution throughout its full measurement range, thus reducing offsets to a minimum. This aim is reached through active offset compensation using an analog/digital chopper/de-chopper. A further advantage is the excellent suppression of 1/f noise and a low noise density (35 nV/radicHz) down to the DC-threshold. Common current sensors may be replaced with this technology whose one output is likewise analog. The power supply requirements are also far lower than for standard topologies as only a single supply is needed.

Keywords

electric current measurement; electric sensing devices; interference suppression; 1/f noise suppression; DC-threshold; active offset compensation; power supply requirements; wide range low noise current sensor; Current measurement; Fluid flow measurement; Hall effect; Integrated circuit measurements; Power measurement; Power supplies; Resistors; Sensor systems; Topology; Voltage; components for measurement; measurement; sensor;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2008. EPE-PEMC 2008. 13th

Conference_Location

Poznan

Print_ISBN

978-1-4244-1741-4

Electronic_ISBN

978-1-4244-1742-1

Type

conf

DOI

10.1109/EPEPEMC.2008.4635463

Filename

4635463