Abstract: The lighting device comprises at least one emitter (10) of white light (9) produced by an initial radiation (1) and a secondary radiation (2), an electronic control circuit (11) to control the lighting, and a communication circuit (12). The electronic circuit (11) controls power supply of the light emitter to emit a modulating light signal (3, 4, 31, 36) of said initial radiation according to a communication signal (13). Said modulating light signal is designed to be received by a light signal receiver (18) sensitive to the initial radiation (1). A lighting installation comprises a power supply line, at least one lighting device (8) and at least one electrical apparatus (95, 96) connected to a receiver (18) comprising a sensor (19) sensitive to the initial radiation (1).

Abstract: The lighting device comprises at least one emitter (10) of white light (9) produced by an initial radiation (1) and a secondary radiation (2), an electronic control circuit (11) to control the lighting, and a communication circuit (12). The electronic circuit (11) controls power supply of the light emitter to emit a modulating light signal (3, 4, 31, 36) of said initial radiation according to a communication signal (13). Said modulating light signal is designed to be received by a light signal receiver (18) sensitive to the initial radiation (1). A lighting installation comprises a power supply line, at least one lighting device (8) and at least one electrical apparatus (95, 96) connected to a receiver (18) comprising a sensor (19) sensitive to the initial radiation (1).

Abstract: The optic coupling device comprises optic emitting elements arranged in a coating material to emit a first light signal to an optic duct, and optic receiving elements separated from the emitting elements to receive a second light signal from the optic device. To improve the efficiency and simplify manufacturing, the optic receiving elements receive the second light signal through the coating material. An optic probe comprises the optic coupling device, an optic sensor, and an optic duct joining the coupling device and the sensor to transmit a first light signal to the sensor and to receive a second light signal to the coupling device. The communication device comprises two stations connected by an optic duct and comprising coupling devices.

Abstract: The invention concerns a self-powered remote control device comprising transmitting means, a feeder circuit connected to said transmitting means, a generator supplying electric power connected to the feeder circuit, and control means associated with the electric power generator. The generator comprises at least a piezoelectric element receiving mechanical stresses produced by actuating the control means and supplying electric power to the feeder circuit. The invention also concerns an apparatus comprising at least a self-contained control device actuated by a mechanical action member. The invention further concerns an electric installation comprising means for receiving signals transmitted by at least a self-powered control device.

Abstract: The optic coupling device comprises optic emitting means arranged in a coating material to emit a first light signal to an optic duct, and optic receiving means separated from the emitting means to receive a second light signal from said optic device. To improve the efficiency and simplify manufacturing, the optic receiving means receive the second light signal through said coating material. An optic probe comprises said optic coupling device, an optic sensor, and an optic duct joining the coupling device and the sensor to transmit a first light signal to the sensor and to receive a second light signal to the coupling device. The communication device comprises two stations connected by an optic duct and comprising coupling devices.

Abstract: The signal processing device comprises determining means to supply an output signal having a value representative of a time constant of a part of an input signal having an appreciably exponential form. The determining means comprise first integrating means to supply a first integration signal representative of integration of the input signal in two opposite directions for appreciably equal times. Extraction means connected to the first integrating means supply a value representative of a time constant as a function of the first integration signal. The process comprises integration and extraction steps to supply the value representative of a time constant.

Abstract: The invention concerns a self-powered remote control device comprising transmitting means, a feeder circuit connected to said transmitting means, a generator supplying electric power connected to the feeder circuit, and control means associated with the electric power generator. The generator comprises at least a piezoelectric element receiving mechanical stresses produced by actuating the control means and supplying electric power to the feeder circuit. The invention also concerns an apparatus comprising at least a self-contained control device actuated by a mechanical action member. The invention further concerns an electric installation comprising means for receiving signals transmitted by at least a self-powered control device.

Abstract: The signal processing device comprises determining means to supply an output signal having a value representative of a time constant of a part of an input signal having an appreciably exponential form. The determining means comprise first integrating means to supply a first integration signal representative of integration of the input signal in two opposite directions for appreciably equal times. Extraction means connected to the first integrating means supply a value representative of a time constant as a function of the first integration signal. The process comprises integration and extraction steps to supply the value representative of a time constant.

Abstract: A measuring sensor of an electronic trip device of a circuit breaker comprises a shunt in the form of a hollow cylinder inside which there is located an electronic processing unit, comprising an amplifier circuit and an input resistance in good thermal contact with the internal face of the cylinder.

Abstract: Insulation monitoring of a direct current power supply system is achieved by application of an alternating current and the detector is constituted by a current transformer and a Hall-effect current sensor. This Hall-effect sensor controls a direct current generator, which supplies a compensation winding of the current transformer, so as to prevent saturation of the toroid of this current transformer. When a ground fault occurs, the alternating current generator generates a fault current detected by the transformer.