Abstract: A peripheral apparatus and a control method thereof are provided. The peripheral apparatus is suitable for coupling an electronic device to provide a peripheral function to the electronic device for use, where the peripheral apparatus draws power supplies from the electronic device. The peripheral apparatus includes a power detecting module and a control unit. The power detecting module detects a voltage drop characteristic of a system voltage provided by the electronic device and generates a voltage detecting signal accordingly, where the voltage detecting signal is related to a magnitude of an average output current of the electronic device. The control unit is coupled to the power detecting module and controls an operation state of the peripheral apparatus according to the voltage detecting signal, such that the peripheral apparatus is operated in at least one of a first, a second and a third operation states which are different from each other.

Abstract: An apparatus for observing the interior of a blast furnace system includes a visible light guiding unit which defines a light path along a viewing axis that is radial to an upright axis of a furnace wall body of a blast furnace and which is adapted to be secured to a furnace blowpipe to permit the light path to be in visual communication with a tuyere, a beam splitter which is disposed in an accommodation space in the tubular mount to split a beam of light propagating along the light path into a horizontal component so that the operator can observe furnace condition through a peeping hole, and a vertical component, and a video camera system which includes an elongate casing connected to the tubular mount, and a video camera disposed in a cooling chamber of the casing to capture a light image from the vertical component of the light beam.

Abstract: A battery protection circuit and protection method for a rechargeable battery is provided. The rechargeable battery includes a positive voltage pin, a negative voltage pin, and a temperature sensing pin. A resistance of the temperature sensing pin varies with the temperature of the rechargeable battery. The battery protection circuit includes a temperature and voltage detection unit and a discharging unit. The temperature and voltage detection unit is coupled between the positive voltage pin and the temperature sensing pin, and configured to determine the temperature of the rechargeable battery according to the resistance of the temperature sensing pin. The discharging unit discharges the rechargeable battery when the temperature of the rechargeable battery is higher than a predetermined temperature and stops discharging the rechargeable battery when a voltage of the positive voltage pin is lower than a first predetermined value.

Abstract: An apparatus for observing the interior of a blast furnace system includes a visible light guiding unit which defines a light path along a viewing axis that is radial to an upright axis of a furnace wall body of a blast furnace and which is adapted to be secured to a furnace blowpipe to permit the light path to be in visual communication with a tuyere, a beam splitter which is disposed in an accommodation space in the tubular mount to split a beam of light propagating along the light path into a horizontal component so that the operator can observe furnace condition through a peeping hole, and a vertical component, and a video camera system which includes an elongate casing connected to the tubular mount, and a video camera disposed in a cooling chamber of the casing to capture a light image from the vertical component of the light beam.

Abstract: A battery protection circuit and protection method for a rechargeable battery is provided. The rechargeable battery includes a positive voltage pin, a negative voltage pin, and a temperature sensing pin. A resistance of the temperature sensing pin varies with the temperature of the rechargeable battery. The battery protection circuit includes a temperature and voltage detection unit and a discharging unit. The temperature and voltage detection unit is coupled between the positive voltage pin and the temperature sensing pin, and configured to determine the temperature of the rechargeable battery according to the resistance of the temperature sensing pin. The discharging unit discharges the rechargeable battery when the temperature of the rechargeable battery is higher than a predetermined temperature and stops discharging the rechargeable battery when a voltage of the positive voltage pin is lower than a first predetermined value.