Liaisons Electroniques-mecaniques Lem Sa

Lem Intellectual Property Sa

Lem International Sa

Bernard Richard

Pascal Morel

Pierre Cattaneo

Benjamin Marcoz

Marc Schaerrer

Claude Gudel

Gérard Gery

Toroidal fluxgate current transducer comprising a ring shaped fluxgate sensing unit () comprising a ring-shaped support (), a saturable magnetic core () mounted on the support (), an excitation coil () wound around the support and saturable core and a magnetic shell () mounted around the excitation coil, ring-shaped support and saturable core. The support is ringed-shape and comprises terminals () fixed to the support, a first pair of said terminals connected to ends of the excitation coil, and a second pair of said terminals connected to ends of a secondary coil of the current transducer.

Toroidal fluxgate current transducer

An electrical current sensor comprises a magnetic circuit with an air-gap, a magnetic field sensor positioned in the air-gap, and a secondary coil surrounding a branch of the magnetic circuit. The magnetic circuit comprises at least two parts () that are assembled together, a branch portion () of each part being insertably received in a central cavity of the secondary coil in an axial direction (A). The air-gap () is arranged between overlapping branch portions of each magnetic field circuit part.

Current sensor

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Grens, Switzerland

Bernard Richard