Abstract: The electrical energy conversion system comprises: a converter including E first switching assembly or assemblies, each associated with an input voltage and including two first switches; N second switching assembly or assemblies, each associated with an output voltage and including two second switches; and at least one piezoelectric assembly connected to a switch; E>1, N>1; a control device configured for controlling, during a resonance cycle, a switching of the switches so as to alternate phases at constant voltage and phases at constant load across said piezoelectric assembly or assemblies. The converter comprising an electrical transformer having a primary winding connected to a first switching assembly and a secondary winding connected to a second switching assembly, and each piezoelectric assembly being connected between a switch and a winding.

Abstract: This electrical energy converter comprises: a first bridge comprising at least a first switching branch between two terminals of an input voltage and including two first switches connected at a first midpoint; a second bridge comprising at least a second switching branch between two terminals of an output voltage and including two second switches connected at a second midpoint; at least one piezoelectric assembly connected between respective first and second midpoints; and at least one switching aid circuit connected to a respective midpoint and configured to, via the flow of a previously received current, discharge a parasitic capacitance of a switch of the bridge to which it is connected, and respectively charge a parasitic capacitance of another switch of said bridge.

Abstract: The invention concerns an electronic device for controlling a converter from an input voltage to at least one output voltage, comprising a first bridge comprising two first switching branches, each between two terminals of the input voltage and comprising two first switches connected at a first midpoint; at least one second bridge comprising two second switching branches, each between two terminals of the output voltage and comprising two second switches connected at a second midpoint; at least one pair of first and second piezoelectric assemblies, each connected between respective first and second midpoints, distinct from one piezoelectric assembly to the other. The control device commands, during a respective resonance cycle of the piezoelectric assemblies, a switching of each of the switches to alternate phases at substantially constant voltage across the piezoelectric assemblies and phases at substantially constant load across said piezoelectric assemblies.

Abstract: A converter of an input voltage into at least one output voltage, including a pair of first and second piezoelectric assemblies; a first bridge including two first switching branches each having at least one first switch; a second bridge including two second switching branches each having at least one second switch; each piezoelectric assembly including a first end connected to the first bridge and a second end connected to the second bridge; each first switch being connected between a terminal of the input voltage and a first end; each second switch being connected between a terminal of the output voltage and a second end.

Abstract: A software application for an electronic device with an integral or attached vibrator automatically controls activation of the vibrator to induce hands-free controlled rotation of the device. In typical embodiments, the device is a smartphone with a camera, and the application activates the vibrator to cause the device to rotate to a series of angular positions, activates the camera to take a series of photographs at those positions, and stitch together those photographs into a composite panoramic photograph. The application monitors the angular position of the device based on inputs from motion and/or position sensors of the device. In other embodiments, the application automatically activates the vibrator to induce hands-free rotation of the device for other uses such as video-conferencing or gaming. And in other embodiments, the application activates the vibrator to cue manual rotation of the device by the user for panoramic photography or other uses.

Abstract: A software application for an electronic device with an integral or attached vibrator automatically controls activation of the vibrator to induce hands-free controlled rotation of the device. In typical embodiments, the device is a smartphone with a camera, and the application activates the vibrator to cause the device to rotate to a series of angular positions, activates the camera to take a series of photographs at those positions, and stitch together those photographs into a composite panoramic photograph. The application monitors the angular position of the device based on inputs from motion and/or position sensors of the device. In other embodiments, the application automatically activates the vibrator to induce hands-free rotation of the device for other uses such as video-conferencing or gaming. And in other embodiments, the application activates the vibrator to cue manual rotation of the device by the user for panoramic photography or other uses.