Electronic apparatus and power supply device that switch between on-state and off-state

摘要

The electronic apparatus includes a direct-current voltage generation part that generates a direct-current voltage from a commercial power supply; a switching part that switches between an on-state in which the direct-current voltage from the direct-current voltage generation part is output, and an off-state in which the output of the direct-current voltage is shut down, a control part that controls operation of the direct-current voltage generation part; and a power supply maintaining part connected to the direct-current voltage generation part, the power supply maintaining part instructing the switching part to be in the on-state or the off-state, and consequently, enables provision of a soft-switch electronic apparatus that after recovery of a power failure, automatically returns to a state before occurrence of the power failure.

主权项

1. An electronic apparatus comprising:
a power switch for starting up or shutting down the electronic apparatus; a direct-current voltage generation part that outputs a direct-current voltage; a control part that controls an operation of the electronic apparatus; a switching part that switches between an on-state in which the direct-current voltage from the direct-current voltage generation part is supplied to the control part and an off-state in which the direct-current voltage is not supplied to the control part; and a power supply maintaining part that maintains the switching part in the on-state during a predetermined period in a case where the alternating current voltage is supplied, wherein in a case where the direct-current voltage is supplied to the control part by maintaining the switching part in the on-state, the control part detects whether the power switch is the on-state or the off-state, and wherein in a case where the power switch is on, the control part controls the power supply maintaining part to maintain the switching part in the on-state, and in a case where the power switch is off, the control part controls the power supply maintaining part to maintain the switching part in the off-state.