| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply device with multiple functions without increasing I/O ports, and to provide a power supply control system, an image forming device, and a signal control method.SOLUTION: A power supply device that outputs a predetermined voltage includes: a signal line shared by continuous signals and discontinuous signals; and a switching part that enables either the continuous signal or the discontinuous signal in the signal line. The switching part enables the continuous signal when a value of the continuous signal is not included in a range of invalid region set in advance in the continuous signal, and enables the discontinuous signal when a value of the continuous signal is included in the range of invalid region. |
