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Stmicroelectronics S.a.

Stmicroelectronics (crolles 2) Sas

Stmicroelectronics (rousset) Sas

Sébastien Boisseau

Thomas Skotnicki

Ghislain Despesse

Jean-François Mainguet

Emmanuel Defay

Stéphane Monfray

Jérôme Willemin

Olivier Tosoni

Onoriu Puscasu

Séverin Trochut

Baptiste Alessandri

Alexandre Paleologue

Gérard Delette

Arthur Arnaud

Matthieu Boucaud

François Frassati

Alexandre-Benoit Duret

Olivier Freychet

Alexandre Reinhardt

Brice Ivira

Jean-Jacques Chaillout

An electromagnetic device includes a conductive coil, a main magnet pivoting about an axis XX', a first and second yoke, a first and second stabilizer magnet, as well as a first and second actuator magnet arranged to slide along the axis YY′ that is perpendicular to the pivot axis XX′, in such a way as to force the main magnet to adopt an equilibrium position, the stabilizer magnets are arranged such that this sliding is accompanied by a movement of the stabilizer magnets so as to position one of the stabilizer magnets in a given position in order to limit the leaks which could occur at one of the two yokes.

Electromagnetic device with two conductive coils, first and second yokes, stabilizing magnets and actuating magnets

An electromagnetic device for converting input mechanical energy into output electrical energy, including a movable element that is able to make a vibratory mechanical movement, a vibration source configured to actuate the vibratory mechanical movement of the movable element, a coil, a magnetic circuit passing through the coil, the coil being configured to generate the output electrical energy when the movable element is making its vibratory mechanical movement, a permanent magnet arranged in the magnetic circuit and able to generate a magnetic flux, referred to as the total magnetic flux (Fm_T), in the magnetic circuit.

Electromagnetic device for converting mechanical energy into electrical energy having a magnetic circuit with two magnetic flux gaps

The invention essentially consists of a system () for transmitting acoustic power, which will determine the optimum frequency and the optimum electrical load without data communication being established beforehand with the receiver ().

Method for operating an acoustic transmission system so as to optimize transmitted power

The invention concerns a measurement unit including: an electric ambient energy recovery generator; an element of capacitive storage of the electric energy generated by the generator; an electric battery; a first branch coupling an output node of the generator to a first electrode of the capacitive storage element; a second branch coupling a first terminal of the battery to the first electrode of the capacitive storage element; and an active circuit capable of transmitting a radio event indicator signal each time the voltage across the capacitive storage element exceeds a first threshold, wherein, in operation, the capacitive storage element simultaneously receives a first charge current originating from the generator via the first branch and a second charge current originating from the battery via the second branch.

System for measuring the power level of an ambient energy source

The instant disclosure relates to a circuit for comparing a voltage with a first threshold, in which said first threshold depends on a second threshold of opening at least one first normally closed breaker.

Circuit for comparison of a voltage with a threshold and conversion of electrical energy

A circuit for comparing a voltage with a threshold, including: first and second nodes of application of the voltage; a first branch including a first transistor series-connected with a first resistor between first and second nodes; a second branch parallel to the first branch, including second and third series-connected resistors forming a voltage dividing bridge between the first and second nodes, the midpoint of the dividing bridge being connected to a control node of the first transistor; and a third branch including a second transistor in series with a resistive and/or capacitive element, between the control node of the first transistor and the first or second node, a control node of the second transistor being connected to the junction point of the first transistor and of the first resistor.

Circuit for comparing a voltage with a threshold

A device for indicating the filling level of a container, including: a first mobile element located inside of the container and capable of moving along a wall of the container when the filling level of the container varies; an enclosure containing a liquid or a gel, located outside of the container on the side of said wall opposite to the first element; and a second mobile element located inside of the enclosure and plunged into said liquid or gel, the second element being magnetically coupled to the first element and being capable of moving in the enclosure along said wall by following the displacements of the first element.

Device for indicating the filling level of a container

Growing community of inventors

Echirolles, France

Sébastien Boisseau