Abstract: Fluxgate current transducer including a control circuit and a fluxgate measuring device comprising a fluxgate magnetic field detector, the fluxgate magnetic field detector comprising a saturable soft magnetic core surrounded by an excitation coil, the control circuit comprising an excitation coil drive circuit connected to the excitation coil and a controller connected to the excitation coil drive circuit configured to generate an alternating excitation current Ifx to alternatingly saturate the soft magnetic core. The controller is in the form of a FPGA (Field Programmable Gate Array) comprising at least one input comprising a 1 bit sigma delta analog-to-digital converter (ADC) connected to the excitation coil to receive a measurement signal output by the excitation coil.

Abstract: Electric current transducer comprising a housing, a magnetic core and a magnetic field detection system, the magnetic core surrounding a primary conductor passage for receiving a primary conductor therethrough, the magnetic core comprising a first part and a second part assembled in the housing so as to form a first magnetic circuit gap and a second magnetic circuit gap, the magnetic field detection system comprising a first magnetic field detector positioned in the first magnetic circuit gap and a second magnetic field detector positioned in the second magnetic circuit gap, the first and second magnetic circuit gaps being disposed on opposing sides of magnetic core, each of the first and second parts comprising a pair of lateral branches, joined by a bridging branch.

Abstract: Electric current transducer comprising a housing, a magnetic core and a magnetic field detection system, the magnetic core surrounding a primary conductor passage for receiving a primary conductor therethrough, the magnetic core comprising a first part and a second part assembled in the housing so as to form a first magnetic circuit gap and a second magnetic circuit gap, the magnetic field detection system comprising a first magnetic field detector positioned in the first magnetic circuit gap and a second magnetic field detector positioned in the second magnetic circuit gap, the first and second magnetic circuit gaps being disposed on opposing sides of magnetic core, each of the first and second parts comprising a pair of lateral branches, joined by a bridging branch.

Abstract: Fluxgate current transducer including a control circuit and a fluxgate measuring device comprising a fluxgate magnetic field detector, the fluxgate magnetic field detector comprising a saturable soft magnetic core surrounded by an excitation coil, the control circuit comprising an excitation coil drive circuit connected to the excitation coil and a controller connected to the excitation coil drive circuit configured to generate an alternating excitation current Ifx to alternatingly saturate the soft magnetic core. The controller is in the form of a FPGA (Field Programmable Gate Array) comprising at least one input comprising a 1 bit sigma delta analog-to-digital converter (ADC) connected to the excitation coil to receive a measurement signal output by the excitation coil.

Abstract: Fluxgate current transducer including a fluxgate device comprising a saturable soft magnetic core and an excitation coil, and a processing circuit comprising a control circuit and a voltage generator connected to the control circuit for generating an alternating current in the excitation coil, the voltage generator generating a voltage oscillating between a maximum positive voltage (+U) and a maximum negative voltage (?U) configured to alternatingly saturate the soft magnetic core. The signal processing circuit comprises an overload circuit portion connected to the control circuit, configured to generate overload currents through the excitation coil over time windows (Tn) after detection of the excitation coil current reaching positive and negative threshold currents (+S3, ?S3) representative of saturation of the magnetic core, during at least one of a plurality of alternating voltage periods (P).

Abstract: Fluxgate current transducer including a fluxgate device comprising a saturable soft magnetic core and an excitation coil, and a processing circuit comprising a control circuit and a voltage generator connected to the control circuit for generating an alternating current in the excitation coil, the voltage generator generating a voltage oscillating between a maximum positive voltage (+U) and a maximum negative voltage (?U) configured to alternatingly saturate the soft magnetic core. The signal processing circuit comprises an overload circuit portion connected to the control circuit, configured to generate overload currents through the excitation coil over time windows (Tn) after detection of the excitation coil current reaching positive and negative threshold currents (+S3, ?S3) representative of saturation of the magnetic core, during at least one of a plurality of alternating voltage periods (P).