Patent ID: 11881772
Assignee: FUJITSU LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A power supply device comprising:
a power supply circuit configured to output different voltages to a plurality of output lines;
a plurality of capacitors provided in correspondence with the plurality of output lines, one end of each of the plurality of capacitors being coupled to a corresponding output line of the plurality of output lines and an other end thereof being coupled to a ground potential;
a plurality of diodes provided in correspondence with the plurality of output lines, anodes of the plurality of diodes being coupled to the corresponding output lines and cathodes thereof being commonly coupled;
a discharge resistor coupled to the cathodes of the plurality of diodes; and
a control circuit configured to control current that flows through the discharge resistor according to magnitude of the input voltage,
wherein the power supply circuit includes a plurality of voltage generation circuits that generate a plurality of the voltages from a common input voltage, and
wherein in a case where the input voltage is higher than a predetermined value, the control circuit suppresses the current as compared with a case where the input voltage is lower than the predetermined value.