Abstract: The invention relates to a power electronic module comprising a plurality of bridge arms mounted in parallel and a plurality of output terminals (BS) connected to the middle points of said bridge arms, characterized in that it comprises at least two semi-conductor chips (P1, P2), each of the chips including in a single-block form a plurality of semi-conductor switches (T) implemented according to a vertical technology and having active and voltage holding areas electrically insulated from each other, each switch of a chip being connected to a respective switch of another chip so as to form a bride arm. The invention also relates to a power electronic module that comprises a stack of four semi-conductor chips and five semi-conducting layers arranged alternatively so as to form a switching cell having a coaxial structure.

Abstract: A binocular device including two ocular units and directing means to allow a user to view a display, the display being moveable when the distance between the ocular units is varied for interocular adjustment to maintain focus on the display. Instead of the display being movable, focus can be maintained by the inclusion in the directing means of optical relays for transmitting parallel light. In a further embodiment, a sensor is provided, the output of which is directed for viewing via the ocular units. In yet another embodiment, image capture means are provided for recording the image from the ocular units.

Abstract: A gas-blast circuit-breaker comprises arcing contacts provided with nozzles of the same diameter, operating means ensuring an original movement of a mobile one of the arcing contacts in the opposite direction to that of the mobile main contact at the opening of the device.