Abstract: An electronic device for the diagnosis of insulation loss of an energized electrical apparatus, with respect to a ground. The device includes a first resistance-switch group and a second resistance-switch group, connectable or disconnectable in a controlled manner, and also a first measurement circuit and a second measurement circuit, arranged in parallel to the first and second resistance-switch groups, respectively. The first and second measurement circuits include respective first and second detection circuits, first and second charge modulation circuits and first and second partition resistors (RBminus, RBplus). The first and second charge modulation circuits allow a dynamic “switching” measurement technique. Moreover, a method is described for measuring the insulation resistances (RIminus, RIplus) of an energized electrical apparatus with respect to ground, in which the method is carried out by a device according to the invention. Finally, a self-diagnosis method of device is described.

Abstract: The present invention relates to a system for facilitating the extraction of hydrocarbons, in particular extraction by RF heating of high-viscosity hydrocarbons in situ by means of an antenna comprising a coaxial array of mode converters.

Abstract: The present invention relates to a system for facilitating the extraction of hydrocarbons, in particular extraction by RF heating of high-viscosity hydrocarbons in situ by means of an antenna comprising a coaxial array of mode converters.

Abstract: A vehicle step apparatus including an extending and retracting device having a mounting bracket, a step bracket, and an arm assembly. A gear box has a cavity into which at least a portion of a motor shaft of a motor is inserted. A worm wheel is rotatably disposed in the cavity and has a worm wheel body meshing with the motor shaft. An output shaft is mounted to the worm wheel body. A sun gear is fitted over the output shaft. A planet carrier is rotatably disposed in the cavity and connected with the arm assembly. A planet gear is rotatably mounted to the planet carrier and meshes with the sun gear. An adjusting member is mounted in the gear box, and is movable in an axial direction of the motor shaft and abuts against a free end of the motor shaft.