Abstract: There is provided a fan unit including a shutter capable of closing the shutter despite a change in installation direction of the fan unit, an electronic apparatus including such fan unit, a method of opening/closing the fan unit, and the shutter. In the fan unit with the shutter, the shutter is opened and closed in different directions according to the installation direction of the fan unit.

Abstract: A counting unit counts a current supplying duration for a component which determines a life of a device. A prediction unit predicts the device life based on an integrated current supplying duration integrated by the counting unit and a lifetime of the component. A monitoring unit monitors an efficient operating condition of the device based on a prediction signal outputted from the life prediction unit. The counting unit and the life prediction unit is provided at a short-life fan and a long-life component respectively, and the life prediction unit predicts the life of the device based on information on the short-life fan and the long-life component.

Abstract: There is provided a fan unit including a shutter capable of closing the shutter despite a change in installation direction of the fan unit, an electronic apparatus including such fan unit, a method of opening/closing the fan unit, and the shutter. In the fan unit with the shutter, the shutter is opened and closed in different directions according to the installation direction of the fan unit.

Abstract: A counting unit counts a current supplying duration for a component which determines a life of a device. A prediction unit predicts the device life based on an integrated current supplying duration integrated by the counting unit and a lifetime of the component. A monitoring unit monitors an efficient operating condition of the device based on a prediction signal outputted from the life prediction unit. The counting unit and the life prediction unit is provided at a short-life fan and a long-life component respectively, and the life prediction unit predicts the life of the device based on information on the short-life fan and the long-life component.

Abstract: Main power supply circuit includes an inrush current suppressing circuit serially connected between its rectifying circuit and a load, this inrush current suppressing circuit being composed of a current limiting resistor and an FET switch that is serially connected to this resistor. An auxiliary power supply circuit provides power for a control circuit of the main power supply circuit, and, after the power supply switch is closed, a delay circuit monitors rise of a charge voltage of a smoothing capacitor within the main power supply circuit as well as rise of control circuit voltage of the auxiliary power supply circuit and establishes a delay time. After the elapse of the delay time, the FET switch is turned ON and the inrush current suppressing circuit is closed. The inrush current suppressing circuit is then short circuited within a short time period and the load operation is continued.