Abstract: Method for producing parts for passive electronic components according to which: a laminated strip (1) is produced which is constituted by at least one stack of a thin metal strip and a layer of adhesive material, and at least one part (6) is cut from the laminated strip (1), the cutting operation being carried out using a method which comprises at least one step for etching by means of sandblasting. Parts produced.

Abstract: The invention relates to a device for measuring the quality and/or degradation of a fluid, especially an oil, comprising a sensor consisting of at least one pair of electrodes which are distanced from each other. Said sensor is immersed in the fluid which is to be measured. The electrodes and the fluid form a capacitive element whose capacity varies according to the dielectric constant of the fluid. The sensor can provide an electric output signal representing said dielectric constant. The inventive device also comprises processing means which receive the output signal and which can determine the degree of quality and/or degradation of the fluid on the basis of said output signal. The invention is characterized in that the electrodes extend substantially on the same plane and in that the fluid surrounds the two surfaces of the electrodes on both sides of said plane.

Abstract: A device for transporting magnetic or magnetisable microbeads (25) in a capillary chamber (14) comprises a permanent magnet (10) or an electromagnet (11) for subjecting the capillary chamber to a substantially uniform magnetic field, to apply a permanent magnetic moment to the microbeads (25). At least one planar coil (22) and preferably an array of overlapping coils are located adjacent to the capillary chamber (14) for applying a complementary magnetic field on the microbeads parallel or antiparallel to said substantially uniform magnetic field, to drive the microbeads. An arrangement is provided for switching the current applied to the coil(s) (22) to invert the field produced thereby, to selectively apply an attractive or repulsive driving force on the microbeads (25). The device is usable to transport microbeads for performing chemical and biochemical reactions or assay, as is done for instance in clinical chemistry assays for medical diagnostic purposes.

Abstract: An apparatus for retaining magnetic particles within a segment of a flow-through cell during flow of a fluid through the cell comprises (a) optionally, an electrical current source; (b) an electromagnet having a winding connected to the current source and an air gap between at least one pair of poles each of which has a corrugated outer surface and (c) a flow-through cell which is configured and dimensioned to receive an amount of magnetic particles to be retained within the flow-through cell and to allow flow of a liquid through the flow-through cell. The liquid carries molecules or particles to be captured by means of the magnetic particles. A portion of the flow-through cell is inserted in air gap.

Abstract: The manufacturing method for components of the inductive type, in particular inductance coils, transformers or antennae, consists in making by micro-machining simultaneously on a first substrate made of magnetic material a plurality of first parts (1) connected to each other by connecting elements (2) or a connecting support, inserting on the arms (8a, 8b, 8c) of these first parts (1) a printed multi-layered plate (4, 5) having openings for the arms and metal windings ending in at least two contact pads (7a, 7b), in placing and securing a second substrate made of magnetic material on the first substrate and the plate, said second substrate having undergone micro-machining to obtain second parts (13) complementary to the first parts. These second parts are connected to each other by connecting elements or a connecting support.

Abstract: The manufacturing method for components of the inductive type, in particular inductance coils, transformers or antennae, consists in making by micro-machining simultaneously on a first substrate made of magnetic material a plurality of first parts (1) connected to each other by connecting elements (2) or a connecting support, inserting on the arms (8a, 8b, 8c) of these first parts (1) a printed multi-layered plate (4, 5) having openings for the arms and metal windings ending in at least two contact pads (7a, 7b), in placing and securing a second substrate made of magnetic material on the first substrate and the plate, said second substrate having undergone micro-machining to obtain second parts (13) complementary to the first parts. These second parts are connected to each other by connecting elements or a connecting support.

Abstract: The manufacturing method for components of the inductive type, in particular inductance coils, transformers or antennae, consists in making by micro-machining simultaneously on a first substrate made of magnetic material a plurality of first parts (1) connected to each other by connecting elements (2) or a connecting support, inserting on the arms (8a, 8b, 8c) of these first parts (1) a printed multi-layered plate (4, 5) having openings for the arms and metal windings ending in at least two contact pads (7a, 7b), in placing and securing a second substrate made of magnetic material on the first substrate and the plate, said second substrate having undergone micro-machining to obtain second parts (13) complementary to the first parts. These second parts are connected to each other by connecting elements or a connecting support.

Abstract: The manufacturing method for components of the inductive type, in particular inductance coils, transformers or antennae, consists in making by micro-machining simultaneously on a first substrate made of magnetic material a plurality of first parts (1) connected to each other by connecting elements (2) or a connecting support, inserting on the arms (8a, 8b, 8c) of these first parts (1) a printed multi-layered plate (4, 5) having openings for the arms and metal windings ending in at least two contact pads (7a, 7b), in placing and securing a second substrate made of magnetic material on the first substrate and the plate, said second substrate having undergone micro-machining to obtain second parts (13) complementary to the first parts. These second parts are connected to each other by connecting elements or a connecting support.

Abstract: The manufacturing method for components of the inductive type, in particular inductance coils, transformers or antennae, consists in making by micro-machining simultaneously on a first substrate made of magnetic material a plurality of first parts (1) connected to each other by connecting elements (2) or a connecting support, inserting on the arms (8a, 8b, 8c) of these first parts (1) a printed multi-layered plate (4, 5) having openings for the arms and metal windings ending in at least two contact pads (7a, 7b), in placing and securing a second substrate made of magnetic material on the first substrate and the plate, said second substrate having undergone micro-machining to obtain second parts (13) complementary to the first parts. These second parts are connected to each other by connecting elements or a connecting support.