Abstract: Provided is a method of evaluating electrode quality, which includes: providing a plurality of electrodes which include a current collector and an active material layer formed on the current collector and have not been roll-pressed; measuring a color coordinate value of the active material layer of each of the plurality of electrodes using an optical instrument and calculating an average value; and evaluating the electrodes as good products when a difference between the color coordinate value measured from the individual electrodes and the average value is no more than a predetermined value and as defective when the difference exceeds the predetermined value.

Abstract: An electrical device protection circuit for a smart grid includes a detection unit for detecting whether or not the output power source of an electrical device short-circuits; a switch unit for connecting power, input to the electrical device, to the output power source of the electrical device or disconnect it therefrom; and a control unit for generating a control signal for making the switch unit disconnect the power input to the electrical device from the output power source of the electrical device. According to the electrical device protection circuit for a smart grid, a simply configured protection circuit, arranged in the electrical device, operates when the output power source of the electrical device short-circuits, whereby the electrical device may be prevented from being damaged.

Abstract: A power supply apparatus includes: a main switch element connected to a terminal of a lamp and configured to perform a switching operation; an AC to DC converter configured to an AC to DC converter configured to generate DC power by using a signal of an AC hot line and a signal of the terminal of the lamp; a comparator configured to compare a comparison input signal with a predetermined first reference voltage; and a control signal generator configured to generate a control signal for controlling an operation of the main switch element by using an output signal from the comparator.

Abstract: An electrical device protection circuit for a smart grid includes a detection unit for detecting whether or not the output power source of an electrical device short-circuits; a switch unit for connecting power, input to the electrical device, to the output power source of the electrical device or disconnect it therefrom; and a control unit for generating a control signal for making the switch unit disconnect the power input to the electrical device from the output power source of the electrical device. According to the electrical device protection circuit for a smart grid, a simply configured protection circuit, arranged in the electrical device, to operates when the output power source of the electrical device short-circuits, whereby the electrical device may be prevented from being damaged.

Abstract: A mobile communication terminal including a country code storing section for storing country codes and area codes for every country and international access codes. A control section displays the country codes, area codes, and international access codes stored in the country code storing section when a user enters a command for searching for a country code, generates a telephone number input window for inputting and sequentially displaying an international access code, a country code, and an area code, as selected by the user. The user then inputs a telephone number.

Abstract: A mobile communication terminal is provided with a UV sensor for sensing UV rays and generates an electric signal in proportion to the amount of sensed UV rays. The terminal includes a memory for storing UV information according to a UV index, and a control unit for detecting a UV index from the electric signal from the UV sensor and reading UV information in response to the detected UV index to inform a user.

Abstract: The present invention relates to a portable computer having a power adapter unit and a detachable cooling fan. There is provided an adapter unit converting AC voltage into DC voltage and supplying the DC voltage to the portable computer, including an input terminal for receiving the AC voltage, a voltage-transformation member for converting the AC voltage into the DC voltage, an output terminal for supplying the DC voltage of the voltage-transformation member with the portable computer, and a ventilation member attached to the portable computer housing, wherein the ventilation member induces an airflow within the electronic circuit containing housing of the portable computer, and wherein the output terminal and the ventilation member are integrated to be electrically connected with the portable computer.

Abstract: A portable computer system enables locating the mouse pointer precisely on the monitor screen. The computer system includes a pointing device such as a touch pad mounted at top surface of the main body with two mouse buttons. A button is provided at left sides of the touch pad. This button is similar to the mouse button and used when fine adjustment of the mouse pointer is needed. The operation of the fine adjustment mode performed in the computer are as follows: determining whether a fine adjustment mode selection key is pressed; zooming in a predetermined screen area including current location of the pointer based on the corresponding video driver and operating system; locating the pointer at the desired position within the zoom in screen; checking if the fine adjustment mode has canceled; and restoring the zoom in screen to original picture if the fine adjustment mode is canceled. The cancellation of the fine adjustment mode is performed by detecting the signal fed from one of the mouse buttons.