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US 2008/0174179 A1Published application
Power supply device and method of supplying power supply voltage to load device
AssigneeFujitsu Limited
InventorsMinoru HIRAHARA, Eiji MIYACHIKA
Life of this patent
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Abstract
A power supply device that reduces the loss of a load device, such as an amplifier, which is a supply destination of a power supply voltage. The power supply device includes a controller 14 for controlling a power supply voltage supplied to a load device 12 variably in accordance with an input voltage of the load device 12 (output of a signal source 13).
Claims17
A power supply device supplying a power supply voltage to a load device such as an amplifier, comprising:
- control means for controlling the power supply voltage supplied to the load device variably in a stepwise manner in accordance with an input or output voltage of the load device.
A method of supplying a power supply voltage to a load device for supplying a power supply voltage to a load device such as an amplifier, comprising:
- a controlling step of controlling the power supply voltage supplied to the load device variably according to an input or output voltage of the load device.
Dependencies are inferred from the claim text.