Abstract:
A multilayer electronic component includes a ceramic body having stacked dielectric layers to form a first capacitor part and a second capacitor part, wherein the first capacitor has a constant capacitance, and the second capacitor part has a variable capacitance; a voltage control terminal formed on a lateral surface of the ceramic body; an input terminal disposed on another lateral surface of the ceramic body corresponding to the first capacitor part; and an output terminal disposed on the other lateral surface of the ceramic body corresponding to the second capacitor part separate from the input terminal.
Abstract:
A wireless signal transmitting apparatus, includes: a piezoelectric harvester configured to generate electrical energy responsive to user switch manipulation; and, a wireless communication circuit configured to generate wireless signals from the electrical energy and wirelessly transmit the wireless signals to an external wireless power receiving device.
Abstract:
A wireless power transmitting device includes: a rectifier configured to rectify alternating current (AC) power; a capacitor configured to store the rectified AC power as direct current (DC) power; a voltage divider configured to divide a voltage of the DC power; and a wireless power transmitter configured to wirelessly transmit power using the voltage divided by the voltage divider.
Abstract:
A composite electronic component includes: a power stabilization unit including a capacitor and an inductor connected to each other in series and configured to rectify input voltage to generate output voltage; and a switch unit including a first switch connected to the capacitor in parallel and a second switch connected to the inductor in parallel.
Abstract:
A touchscreen panel includes: a panel; a piezoelectric vibrating part provided on a side of the panel to generate power and vibrations; a touch sensing part provided on one surface of the piezoelectric vibrating part opposite to the other surface of the piezoelectric vibrating part facing the panel; and a substrate provided on a side of the touch sensing part.
Abstract:
A non-contact type power charger may include: a power transmitting device including a plurality of power transmitting coils transmitting power in a non-contact manner; and a power receiving device including a plurality of power receiving coils receiving the power in a non-contact manner to charge a plurality of battery cells, respectively connected to the plurality of power receiving coils, with the power, wherein the power transmitted to each of the plurality of power receiving coils is controlled depending on coupling coefficients between the plurality of power transmitting coils and the plurality of power receiving coils.
Abstract:
A non-contact type power charging apparatus may include a plurality of power transmitting coils transmitting power in a non-contact scheme, a plurality of switching units connected to the power transmitting coils, respectively, to switch the power transmitted through corresponding power transmitting coils, and a switching controlling unit controlling power switching of the switching units depending on coupling coefficients between each of the power transmitting coils and at least one power receiving coil of a plurality of battery apparatuses. The battery apparatuses may have at least one power receiving coil receiving the power from the power transmitting coils to charge the power in at least one battery cell.
Abstract:
Provided are a piezoelectric energy harvester and a wireless switch including the piezoelectric energy harvester. The wireless switch uses energy generated in a piezoelectric energy harvester as a source of driving power, thereby transmitting communications signals to an external electronic device without requiring a battery. In addition, the piezoelectric energy harvester generates displacement in a piezoelectric element through a magnetic force generated in a magnet, thereby generating a constant level of energy when generating the driving power.
Abstract:
There is provided a wireless switch including: an energy harvesting unit generating a first signal and a second signal when a first button is pressed and when the first button is released, respectively; a measuring unit measuring a period of time from a time at which the first signal is generated to a time at which the second signal is generated; and a wireless signal transmitting unit transmitting a control signal depending on the period of time measured by the measuring unit.
Abstract:
A power supply device includes a coil unit including at least one primary coil wirelessly transmitting power according to switching frequency for switching input power, and at least one secondary coil spaced apart from the at least one primary coil. A power conversion ratio is determined with respect to the at least one primary coil according to magnetic flux directly received from the at least one primary coil. The power supply device also includes a support unit maintaining a distance between the at least one primary coil and the at least one secondary coil.