Abstract: The disclosure concerns a switched-mode power supply comprising a module for charging and discharging an energy store including an electrical transformer. The device provides high configuration flexibility.

Abstract: An interface device between an electrical network and energy consumer systems, including an input converter with a first winding connected on one side with a reverse blocking module and on the other with a first semiconductor chopper device, second and third windings having an end connected to output converters via first and second reverse blocking modules, and another end connected to the output converters, via a switching cell, a fourth winding having an end to be connected to the network, via a second semiconductor chopper device; and a control module for the semiconductor chopper devices. The interface device also includes a buffer capacitor having a first end connected to the output converters, and another end, to which a reference voltage is applied, isolated from the network; and a power reserve having an end to be connected to the network and another end connected to the fourth winding.

Abstract: A switched-mode power supply device including a charger connected on one side to a direct current electrical network, or rectified alternating current electrical network, a power reserve connected to a second side of the charger, and DC-DC output converters delivering regulated output voltages. The output converters are connected by an input to the first side of the charger. The charger is a current bidirectional, voltage unidirectional converter which, in a first phase, enables the power reserve to be recharged and maintained charged from the network, where the output converters are powered by the network and, in a second phase, in the presence of a power brown-out of the network, enables the power reserve to be discharged to power the output converters. A reverse blocking module is connected to the first side of the charger to disconnect the charger and the output converters from the network during the second phase.

Abstract: The disclosure concerns a switched-mode power supply comprising a module for charging and discharging an energy store including an electrical transformer. The device provides high configuration flexibility.

Abstract: An a.c. signal generator is provided with a first circuit (B1) capable of generating alternations of a first a.c. signal (S1) between a first potential (V+) formed by a first voltage source and a second potential (V?). A second circuit (B2) is capable of generating alternations of a second a.c. signal (S2), phase-shifted relative to the first signal (S1), between the first potential (V+) formed by the first voltage source and the second potential (V?). Such a generator can be used, for example, in a flight control calculator of an aircraft.

Abstract: A device for precharging a voltage converter is provided with a precharging unit, capable of assuming a closed state, as well as with a control unit for the precharging unit, the precharging unit being capable of operating according to a precharging state limiting the value of the precharging current passing through it, the control unit being capable of commanding the operation of the precharging unit according to the precharging state and, once the precharging has been completed, of commanding the precharging unit to change over from the precharging state to the closed state. The assembly has a chopping voltage converter and such a device disposed at the input of the converter. The aircraft is equipped with such a device or with such an assembly.

Abstract: The device for precharging a voltage converter (15) is provided with a precharging unit (3) capable of assuming a closed state, as well as with a control unit (4) for the said precharging unit (3), the said precharging unit (3) being capable of operating according to a precharging state limiting the value of the precharging current passing through it, the said control unit (4) being capable of commanding the operation of the precharging unit (3) according to the precharging state and, once the said precharging has been completed, of commanding the said precharging unit (3) to change over from the precharging state to the closed state. The assembly has a chopping voltage converter (15) and such a device disposed at the input of the said converter (15). The aircraft is equipped with such a device or with such an assembly.

Abstract: An a.c. signal generator is provided with a first circuit (B1) capable of generating alternations of a first a.c. signal (S1) between a first potential (V+) formed by a first voltage source and a second potential (V?). A second circuit (B2) is capable of generating alternations of a second a.c. signal (S2), phase-shifted relative to the first signal (S1), between the first potential (V+) formed by the first voltage source and the second potential (V?). Such a generator can be used, for example, in a flight control calculator of an aircraft.