Abstract: The present disclosure relates to a light emitting diode (LED) driving device that may expand a usable range of LED current and battery voltage by reducing heat generation of an integrated circuit, and an LED lighting device including the same, which may include a current controller that constantly controls an LED current flowing through an LED string and an IC heat dissipation part connected to a node between the LED string and the current controller to dissipate IC heat of the current controller, wherein when a battery voltage supplied to the LED string increases, the IC heat dissipation part reduces a first LED current flowing from the LED string to the current controller and simultaneously increases a second LED current flowing from the LED string to the current controller via the IC heat dissipation part, thereby reducing the IC heat generation of the current controller.

Abstract: Provided is a method for electrowinning neodymium compound. The method includes providing a fluoride-based electrolyte through an opening defined in an electrolytic bath including a cathode and an anode. The method includes providing granules, each including a neodymium compound and having at least one cavity defined therein, through the opening defined in the electrolytic bath. The method includes dissolving at least a portion of the granule in a molten salt of the fluoride-based electrolyte. The method also includes reducing neodymium at the cathode. The cavity is defined inside or on the surface of the granule, and the apparent density of the granules is lower than the density of the molten salt. The method proposed has an improved process compared to those of the related art.

Abstract: Disclosed are a terminal and a method of pairing a terminal with a hearing apparatus. The method of pairing a terminal involves verifying whether a hearing apparatus is in contact with a terminal, and pairing the terminal with the hearing apparatus in response to a determination that the hearing apparatus is in contact with the terminal.

Abstract: Disclosed are a terminal and a method of pairing a terminal with a hearing apparatus. The method of pairing a terminal involves verifying whether a hearing apparatus is in contact with a terminal, and pairing the terminal with the hearing apparatus in response to a determination that the hearing apparatus is in contact with the terminal.