Abstract: A variable-capacitance capacitor having first and second electrodes mobile with respect to each other and third and fourth electrodes insulated from the first and second electrodes, capable of receiving a control signal to vary the relative position of the first and second electrodes in order to vary the capacitance between the first and second electrodes, the capacitor further including a system for controlling the position of the second electrode with respect to the first electrode, the system being arranged so that, for at least one relative position of the second electrode with respect to the first electrode, the position of the second electrode with respect to the first electrode is independent from the voltage between the first and second electrodes.

Abstract: A logic cell, including a first capacitor connected between an application node for applying a supply voltage of the cell and a floating node for providing an output logic signal of the cell, and, connected in parallel with the first capacitor, an association in series of a second capacitor and a first variable-resistance element, the first variable-resistance element including a control electrode connected to an application node for applying a first input logic signal of the cell.

Abstract: The present disclosure relates to a method of tuning an electric charge extraction circuit of a vibrational energy harvester having a mechanical resonator, the method comprising varying, during a first phase, first and second parameters (?1,?2) of the electric charge extraction circuit based on detected harvested power (PHARVEST), each of the first and second parameters (?1,?2) influencing the amount of damping of the mechanical resonator and at least the first parameter (?1) influencing the resonance frequency of the mechanical resonator, wherein the first and second parameters (?1,?2) are varied during the first phase such that the amount of damping remains constant or varies by less than a first significant amount and the resonance frequency reaches a final level.

Abstract: An adiabatic logic cell including a first MOS transistor coupling a node for applying a periodic variable supply voltage of the cell to a floating node for providing an output logic signal of the cell, wherein the first transistor is a dual-gate transistor including a front gate coupled to a node for applying an input logic signal of the cell, and a back gate coupled to a node for applying a first periodic variable bias voltage.

Abstract: A logic cell, including a first capacitor connected between an application node for applying a supply voltage of the cell and a floating node for providing an output logic signal of the cell, and, connected in parallel with the first capacitor, an association in series of a second capacitor and a first variable-resistance element, the first variable-resistance element including a control electrode connected to an application node for applying a first input logic signal of the cell.

Abstract: An adiabatic logic cell including a first MOS transistor coupling a node for applying a periodic variable supply voltage of the cell to a floating node for providing an output logic signal of the cell, wherein the first transistor is a dual-gate transistor including a front gate coupled to a node for applying an input logic signal of the cell, and a back gate coupled to a node for applying a first periodic variable bias voltage.

Abstract: A system including first and second electric or electronic circuits galvanically isolated from each other, and a coupling device coupling the first circuit to the second circuit, the coupling device including a variable-capacitance capacitor including first and second electrodes mobile with respect to each other, separated by an insulating region, and third and fourth electrodes electrically insulated from the first and second electrodes, capable of receiving a control signal to vary, by an electrostatic, electromagnetic, or piezoelectric actuation mechanism, the relative position of the first and second electrodes, to vary the capacitance between the first and second electrodes.

Abstract: A logic cell including a fixed assembly including a first electrode, a mobile assembly including a second electrode, and third, fourth, and fifth electrodes, wherein: the first, second, third, fourth, and fifth electrodes are insulated from one another; the first and second electrodes define a capacitor variable according to the position of the mobile assembly relative to the fixed assembly; the third electrode is connected to a node of application of a first logic input signal; the fourth electrode is connected to a node of application of a second logic input signal; the fifth electrode is connected to a reference node; and the position of the second electrode relative to the first electrode is a function of a combination of the first and second logic input signals.

Abstract: A memory cell in capacitive logic, including a bistable system including a fixed element and a mobile element capable of taking one or the other of two stable positions with respect to the fixed element; a read device including a variable-capacitance capacitor including a first fixed electrode and a second mobile electrode rigidly fixed to the mobile element; and an electrically controllable write device for placing the mobile element in one or the other of its two stable positions.

Abstract: The invention concerns a circuit for recuperating electrical energy from a mechanical resonator (402) comprising: a voltage inversion circuit (408) configured to invert the voltage across a capacitance (Cp) of the mechanical resonator, the voltage inversion circuit comprising: a capacitor (Cint); and a charge transfer circuit configured: to discharge a voltage of a first polarity held by the capacitance of the mechanical resonator to said capacitor during a first period; and to charge a voltage, of opposite polarity to the first polarity, to the capacitance of the mechanical resonator during a second period using the voltage potential stored by said capacitor during the first period; wherein the charge transfer circuit comprises an inductance and at least one switch controllable to limit the current passing through the inductance.

Abstract: An autonomous electronic system includes two input terminals that are connected to an external electrical energy source, a converter circuit comprising at least one inductive element and connected to the terminals in order to receive energy from the source, a means for storing the energy delivered by the converter circuit, an electronic processing circuit performing a predefined function and delivering a data signal after performing the function, an emission circuit connected to an antenna in order to transmit the data signal to a remote receiver, and a control circuit able to control the circuits supplied with power by virtue of the energy source, the system being wherein the converter circuit and the antenna comprise at least one common inductive element and in that it comprises a link device situated between the emission circuit and the at least one common inductive element so as to transmit the signal emitted by the antenna formed at least partly by the at least one common inductive element.

Abstract: A system including first and second electric or electronic circuits galvanically isolated from each other, and a coupling device coupling the first circuit to the second circuit, the coupling device including a variable-capacitance capacitor including first and second electrodes mobile with respect to each other, separated by an insulating region, and third and fourth electrodes electrically insulated from the first and second electrodes, capable of receiving a control signal to vary, by an electrostatic, electromagnetic, or piezoelectric actuation mechanism, the relative position of the first and second electrodes, to vary the capacitance between the first and second electrodes.

Abstract: A logic cell including a fixed assembly including a first electrode, a mobile assembly including a second electrode, and third, fourth, and fifth electrodes, wherein: the first, second, third, fourth, and fifth electrodes are insulated from one another; the first and second electrodes define a capacitor variable according to the position of the mobile assembly relative to the fixed assembly; the third electrode is connected to a node of application of a first logic input signal; the fourth electrode is connected to a node of application of a second logic input signal; the fifth electrode is connected to a reference node; and the position of the second electrode relative to the first electrode is a function of a combination of the first and second logic input signals.

Abstract: A piezoelectric generator including: a piezoelectric element; a circuit for shorting and placing in open circuit the piezoelectric element; and an inductive converter.

Abstract: A variable-capacitance capacitor having first and second electrodes mobile with respect to each other and third and fourth electrodes insulated from the first and second electrodes, capable of receiving a control signal to vary the relative position of the first and second electrodes in order to vary the capacitance between the first and second electrodes, the capacitor further including a system for controlling the position of the second electrode with respect to the first electrode, the system being arranged so that, for at least one relative position of the second electrode with respect to the first electrode, the position of the second electrode with respect to the first electrode is independent from the voltage between the first and second electrodes.

Abstract: The invention relates to a logic cell for an integrated circuit including at least one first variable-capacitance capacitor having first and second main electrodes separated by an insulating region, and a third control electrode capable of receiving a control voltage referenced to a reference node of the cell to vary the capacitance between the first and second main electrodes, the third electrode being coupled to a node of application of a first logic input signal of the cell, and the first and second electrodes being respectively coupled to a node of application of a cell power supply voltage and to a node for supplying a logic output signal of the cell.

Abstract: A DC/DC converter including: a plurality of conversion cells connected in parallel and/or in series, each cell including at least one switch and at least one passive power storage element; and a diagnosis circuit capable of individually testing the cells to detect possible defective cells, of deactivating the defective cells, and of storing the location of the defective cells.

Abstract: A DC/DC converter comprising a first charge pump circuit including first MOS transistors including first depletion MOS transistors, an oscillating circuit connected to the charge pump circuit only at the gates of some at least of the first MOS transistors, including the first depletion MOS transistors.

Abstract: The invention relates to a logic cell for an integrated circuit including at least one first variable-capacitance capacitor having first and second main electrodes separated by an insulating region, and a third control electrode capable of receiving a control voltage referenced to a reference node of the cell to vary the capacitance between the first and second main electrodes, the third electrode being coupled to a node of application of a first logic input signal of the cell, and the first and second electrodes being respectively coupled to a node of application of a cell power supply voltage and to a node for supplying a logic output signal of the cell.

Abstract: A DC/DC converter including: a plurality of conversion cells connected in parallel and/or in series, each cell including at least one switch and at least one passive power storage element; and a diagnosis circuit capable of individually testing the cells to detect possible defective cells, of deactivating the defective cells, and of storing the location of the defective cells.