Abstract: The present description concerns a device for delivering a voltage from an AC voltage, comprising a capacitive element (120), two switches (132H, 132L) in a half-bridge between terminals of the capacitive element (120); terminals (102, 104) of application of the AC voltage; a transformer (160), comprising a first winding (162) coupling to a junction node (136) between the switches (132H, 132L) one of the terminals (104) of application of the AC voltage; and one or a plurality of circuits (170, 180, 140), configured to switch the switches (132H, 132L) and receive an AC current (I164) flowing through a second winding (164) of the transformer (160) and regulate the voltage delivered by the device by acting on a frequency of said AC current and/or on a phase shift of said AC current with respect to its reception.

Abstract: A method for producing a vertical component comprising with the basis of a III-N material, comprising providing platelets made of the III-N material obtained by epitaxy on pads, the platelets comprise at least first and second layers doped and stacked on one another in a vertical direction. The method further includes the production of a first electrode and the production of a second electrode located on the platelet and configured such that a current passing from one electrode to the other passes through at least the second layer in all of its thickness, the thickness being taken in the vertical direction.

Abstract: A method and system for managing traffic of guided vehicles over a railway network include a first ATS system for regulating traffic of guided vehicles over a first regulation domain of the network and a second ATS system configured for regulating traffic of guided vehicles over a second regulation domain. The regulation domains have a common boundary and at least one track connects a first position within the first regulation domain to a second position within the second regulation domain. The second ATS system detects limited traffic capacity at the second position and automatically computes, as a function of the detected limited traffic capacity, a target headway between two successive guided vehicles crossing the common boundary for entering the second regulation domain. The first ATS system automatically determines, from the received target headway, a reference timetable, complying with the received target headway, for the first regulation domain.

Abstract: A method and system for managing guided vehicle traffic over a railway network include a first ATS system regulating guided vehicle traffic over a first regulation domain and a second ATS system regulating guided vehicle traffic over a second regulation domain. The first and second regulation domains have a common boundary. The first ATS system sends, to the second ATS system, configuration and circulation data for a part of the first regulation domain, for regulating guided vehicle traffic on the part according to a set of regulation data from the second ATS system. The second ATS system determines, from received configuration and circulation data, regulation data for an extended regulation domain including the second regulation domain and the part and for sending to the first ATS system the set of regulation data regulating the guided vehicle traffic on the part of the regulation domain of the first ATS system.

Abstract: The present description concerns a device for delivering a voltage from an AC voltage, comprising a capacitive element (120), two switches (132H, 132L) in a half-bridge between terminals of the capacitive element (120); terminals (102, 104) of application of the AC voltage; a transformer (160), comprising a first winding (162) coupling to a junction node (136) between the switches (132H, 132L) one of the terminals (104) of application of the AC voltage; and one or a plurality of circuits (170, 180, 140), configured to switch the switches (132H, 132L) and receive an AC current (I164) flowing through a second winding (164) of the transformer (160) and regulate the voltage delivered by the device by acting on a frequency of said AC current and/or on a phase shift of said AC current with respect to its reception.

Abstract: An optoelectronic device including a light emitting component and a field-effect transistor, the optoelectronic device including a first semiconductor layer made of a III-V or II-VI compound doped a first conductivity type; an active layer of the light-emitting component; and a second semiconductor layer made of the III-V or III-VI compound doped a second conductivity type opposite the first type, the active layer being sandwiched between the first and second semiconductor layers, wherein the channel of the field-effect transistor is located in the first semiconductor layer, the first semiconductor layer being uninterrupted between the field-effect transistor and the lightemitting component.

Abstract: A protection circuit including an input interface; an output interface; a current sensor connected between an input terminal and an output terminal; first and second HEMT transistors of normally closed type connected in series with the current sensor and connected in series by way of a connection node; a transformer, a primary winding of which is connected to the terminals of the current sensor; a rectifier bridge exhibiting two input terminals connected to the terminals of a secondary winding of the transformer, and exhibiting output terminals, an output terminal of the rectifier bridge being connected to the control gates of the transistors, an output terminal of the rectifier bridge being connected to the connection node.

Abstract: An optoelectronic device including a light emitting component and a field-effect transistor, the optoelectronic device including a first semiconductor layer made of a III-V or II-VI compound doped a first conductivity type; an active layer of the light-emitting component; and a second semiconductor layer made of the III-V or III-VI compound doped a second conductivity type opposite the first type, the active layer being sandwiched between the first and second semiconductor layers, wherein the channel of the field-effect transistor is located in the first semiconductor layer, the first semiconductor layer being uninterrupted between the field-effect transistor and the lightemitting component.

Abstract: A protection circuit including an input interface; an output interface; a current sensor connected between an input terminal and an output terminal; first and second HEMT transistors of normally closed type connected in series with the current sensor and connected in series by way of a connection node; a transformer, a primary winding of which is connected to the terminals of the current sensor; a rectifier bridge exhibiting two input terminals connected to the terminals of a secondary winding of the transformer, and exhibiting output terminals, an output terminal of the rectifier bridge being connected to the control gates of the transistors, an output terminal of the rectifier bridge being connected to the connection node.

Abstract: The present invention relates to a thermal energy system (1) that includes at least one exchanger module (100, 200, 300) that includes at least one heat exchanger (110a, 110b, 210a, 210b, 310a, 310b), in particular two heat exchangers, each module including at least a first circuit (140a, 140b, 240a, 240b, 340a, 340b) for a first fluid traversing, in a regular mode of operation, through the heat exchanger in a main flow direction, a second circuit for a second fluid for exchanging thermal energy between the first fluid and the second fluid, and at least one pump (160, 260, 360) including a fluid drive device (162, 262, 362) for driving the first fluid in the main flow direction, characterised in that the drive device is arranged, along the main flow direction, upstream of the heat exchanger. In addition, the invention relates to the application of such a system in ocean thermal energy conversion systems.

Abstract: The present invention relates to a thermal energy system (1) that includes at least one exchanger module (100, 200, 300) that includes at least one heat exchanger (110a, 110b, 210a, 210b, 310a, 310b), in particular two heat exchangers, each module including at least a first circuit (140a, 140b, 240a, 240b, 340a, 340b) for a first fluid traversing, in a regular mode of operation, through the heat exchanger in a main flow direction, a second circuit for a second fluid for exchanging thermal energy between the first fluid and the second fluid, and at least one pump (160, 260, 360) including a fluid drive device (162, 262, 362) for driving the first fluid in the main flow direction, characterised in that the drive device is arranged, along the main flow direction, upstream of the heat exchanger. In addition, the invention relates to the application of such a system in ocean thermal energy conversion systems.