Cosel Co., Ltd.

Nobuto Kawataka

Yuji Hirose

Shinji Moriya

Hikaru Kobayashi

Yuta Usui

Masanobu Hiramatsu

A power supply device is such that when an output voltage is abnormal, a system manager or the like can easily acquire information effective in identifying a cause of the abnormality. The power supply device includes a first light emitting element installed to be visually recognizable from an exterior, and a light emitting element control unit that drives the first light emitting element. When an output voltage is abnormal, the light emitting element control unit causes the first light emitting element to flash, thereby convert at least one of specific power supply operation information used for inferring a cause of the output voltage being abnormal and cause information inferred based on the specific power supply operation information into an optical digital signal formatted for serial communication, and causes the optical digital signal to be output from the first light emitting element. The power supply device includes a second light emitting element that is installed to be visually recognizable from the exterior, and is driven by the light emitting element control unit. When the output voltage is normal, the light emitting element control unit causes the second light emitting element to be statically illuminated.

Growing community of inventors

Toyama, Japan

Nobuto Kawataka