Abstract: The recharging device for portable electronic devices includes at least one protective case for a portable electronic device in the process of being recharged, at least one electrical power supply for a battery of a portable electronic device in the case, a case management device capable of controlling on the one hand the power supply for the battery of a portable electronic device placed inside a case and, on the other hand, the access to each case. In production models, at least one protective case includes recharge connectors of different shapes that fit the recharge connectors of portable electronic devices. In production models, the management device includes a user interface which includes a user identification device.

Abstract: A circuit for controlling the power supply of an electrical load, having a device for detecting a short-circuit of the load. The detection device has a comparator which supplies a signal representative of a short-circuit state of the load when the voltage at the terminals of that load, after filtering, is below a reference voltage Vref. The device has a circuit for rapidly pre-charging a capacitor of the filter, when the load is switched on. The initial time interval during which the output signal of the comparator is not representative of the presence or absence of a short-circuit is thus reduced. The circuit is applicable to the control of actuators in motor vehicle electronics.

Abstract: A keyboard having keys activated by electrical contacts and the capacity to read one state from among four possible states, wherein the keyboard is a dipole disposed between two terminals between which are positioned in parallel three connectors, each including one of the electrical contacts, two of these connectors including diodes mounted anode to cathode, in such a way that the various states may be discriminated by means of the successive application of two reverse electrical voltages (V1, V2) to the terminals of the dipole and the corresponding detection of the logic states of the contacts using a logic detector.