Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Thierry Bouchet

Ivan-Christophe Robin

Hubert Bono

Dominique Bergogne

Matthew Charles

Rene Escoffier

Alain Bailly

Erwan Morvan

René Escoffier

The present description concerns a device for delivering a voltage from an AC voltage, comprising a capacitive element (), two switches (H,L) in a half-bridge between terminals of the capacitive element (); terminals () of application of the AC voltage; a transformer (), comprising a first winding () coupling to a junction node () between the switches (H,L) one of the terminals () of application of the AC voltage; and one or a plurality of circuits (), configured to switch the switches (H,L) and receive an AC current (I) flowing through a second winding () of the transformer () 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.

Device for supplying power from an AC voltage

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.

Optoelectronic device comprising a light-emitting component and a transistor

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.

Current limiter for AC load

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Corenc, France

Thierry Bouchet