| 摘要 |
PROBLEM TO BE SOLVED: To provide a hi-fi audio device capable of removing noise from a power supply unit to reproduce high-quality sound, and a method of removing noise in a power supply unit of the hi-fi audio device.SOLUTION: A hi-fi audio device according to one aspect of the present invention reproduces and outputs a hi-fi sound source. The hi-fi audio device includes an operation unit configured to operate the hi-fi audio device, and a power supply unit comprising: an alternating current power supply unit configured to rectify alternating current supplied from an external power supply into first direct current and supply the first direct current to the operation unit; and a battery unit configured to supply second direct current to the operation unit. The operation unit receives the first direct current and drives the hi-fi audio device when the operation unit does not reproduce the sound source, and receives the second direct current and drives the hi-fi audio device when the operation unit reproduces the sound source. The supply of the first direct current to the operation unit is blocked during a period in which the sound source is reproduced.SELECTED DRAWING: Figure 1 |
