A buoy includes a flotation device configured to float at surface of a body of water. A vibrational linear electric generator (VLEG) is configured to generate power from vibrational oscillations caused by waves using compressed repulsive magnetic fields focused by end magnetic field deflecting magnets. A power collection circuit, which includes a first battery, is configured to collect and store energy generated by the VLEG. One or more electronic components are powered by the vibrational linear electric generator.

A linear power generator includes a columnar or cylindrical center yoke made of a soft magnetic material and an outer yoke made of a soft magnetic material. In the center yoke, rod-shaped permanent magnets magnetized in a circumferential direction are arranged in the circumferential direction in an outer circumference of the center yoke such that opposed magnetic poles of the permanent magnets adjacent to each other become identical, the permanent magnets are extended in an axial direction, and the center yoke includes plural center-side projecting portions linearly arranged in the circumferential direction. The cylindrical or columnar outer yoke includes plural winding portions, plural groove portions, and an outer-side projecting portion. The winding portions are arranged in the circumferential direction about a center axis. The groove portions are arranged at positions opposed to the permanent magnets.

A linear power generator includes a columnar or cylindrical center yoke made of a soft magnetic material and an outer yoke made of a soft magnetic material. In the center yoke, rod-shaped permanent magnets magnetized in a circumferential direction are arranged in the circumferential direction in an outer circumference of the center yoke such that opposed magnetic poles of the permanent magnets adjacent to each other become identical, the permanent magnets are extended in an axial direction, and the center yoke includes plural center-side projecting portions linearly arranged in the circumferential direction. The cylindrical or columnar outer yoke includes plural winding portions, plural groove portions, and an outer-side projecting portion. The winding portions are arranged in the circumferential direction about a center axis. The groove portions are arranged at positions opposed to the permanent magnets.

Embodiments described herein may take the form of an electromagnetic actuator that produces a haptic output during operation. Generally, an electromagnetic coil is wrapped around a central magnet array. A shaft passes through the central magnet array, such that the central array may move along the shaft when the proper force is applied. When a current passes through the electromagnetic coil, the coil generates a magnetic field. The coil is stationary with respect to a housing of the actuator, while the central magnet array may move along the shaft within the housing. Thus, excitation of the coil exerts a force on the central magnet array, which moves in response to that force. The direction of the current through the coil determines the direction of the magnetic field and thus the motion of the central magnet array.

An alternator comprising a primary portion and a secondary portion that are movable relative to each other: the primary portion comprises first and second series of magnets arranged to form an alternation of magnets from the first and second series of magnets; the secondary portion comprising a core and a coil surrounding said core. The secondary portion presents a first collector having teeth that are spaced apart in such a manner that during travel of the secondary portion relative to the primary portion in said travel direction, the alternator adopts in alternation first and second distinct configurations, the teeth of the first collector when in the first configuration facing magnets belonging to the first series of magnets, and the teeth, when in the second configuration, facing magnets belonging exclusively to the second series of magnets.

An alternator comprising a primary portion and a secondary portion that are movable relative to each other: the primary portion comprises first and second series of magnets arranged to form an alternation of magnets from the first and second series of magnets; the secondary portion comprising a core and a coil surrounding said core. The secondary portion presents a first collector having teeth that are spaced apart in such a manner that during travel of the secondary portion relative to the primary portion in said travel direction, the alternator adopts in alternation first and second distinct configurations, the teeth of the first collector when in the first configuration facing magnets belonging to the first series of magnets, and the teeth, when in the second configuration, facing magnets belonging exclusively to the second series of magnets.

Provision is made for a switching device for a wireless switch. The switching device comprises actuating means for receiving a mechanical energy, which can be introduced during a switching operation into the switching device. Furthermore, the switching device with the actuating means and with an energy conversion device comprises mechanically connectible switching means for transmitting the mechanical energy from the actuating means to the energy conversion device, in order to convert the mechanical energy to an electrical energy for transmitting a switching signal. At the same time, the switching means are designed to be actuated during a switching operation by means of the actuating means, in order to transfer, when connected with the energy conversion device, the energy conversion device at least from a first stable condition to a second stable condition, which is different from the first stable condition, in order to produce at least one electrical energy impulse.

A non-contact adjustable hysteretic magnetic encoder includes a bipolar magnetic block, two magnetic sensing components, a storage, and a controller. After retrieving the current rotation angle by accessing a rotation angle table, the controller determines, by an encoding rule, digital logical values of a first phase signal (A-phase signal) and digital logical values of a second phase signal (B-phase signal) and outputs the digital logical values. The phase difference between a first phase signal and a second phase signal is adjusted, and a hysteresis range, also known as hysteresis angle, is adjusted, according to the grids attributed to the predetermined number of grids before the turning point and the grids attributed to the predetermined number of grids after the turning point. Hence, the non-contact adjustable hysteretic magnetic encoder features enhanced potential of expansion and marked industrial practicability.

Embodiments described herein may take the form of an electromagnetic actuator that produces a haptic output during operation. Generally, an electromagnetic coil is wrapped around a central magnet array. A shaft passes through the central magnet array, such that the central array may move along the shaft when the proper force is applied. When a current passes through the electromagnetic coil, the coil generates a magnetic field. The coil is stationary with respect to a housing of the actuator, while the central magnet array may move along the shaft within the housing. Thus, excitation of the coil exerts a force on the central magnet array, which moves in response to that force. The direction of the current through the coil determines the direction of the magnetic field and thus the motion of the central magnet array.

A generator includes a sliding member, a first power generation element and a second power generation element. The sliding member is made of a biomass-containing material. The first power generation element is configured to slide with respect to the sliding member. The second power generation element is configured to generate electrical power by variation of its relative position with respect to the first power generation element.