POWER SUPPLY SYSTEM
First Claim
1. A power supply system including a USB interface for performing a power supply operation from a power supply circuit via the USB interface, the power supply system comprising:
- a first power supply line of the power supply circuit that outputs a plurality of power supply voltages;
a plurality of constant voltage diodes that each have breakdown voltages corresponding to the plurality of power supply voltages; and
a control circuit that selects one of the plurality of power supply voltages as a power supply voltage which will be output from the power supply circuit and selects one of the plurality of constant voltage diodes which will be connected to the first power supply line according to the selected power supply voltage.
1 Assignment
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Accused Products
Abstract
A power supply system according to an embodiment includes a USB connector and performs a power supply operation from a power supply circuit via the USB connector. A power supply apparatus includes a first power supply line of the power supply circuit that outputs a plurality of power supply voltages, a plurality of constant voltage diodes that each have breakdown voltages corresponding to the plurality of power supply voltages, and a control circuit that selects one of the plurality of power supply voltages as a power supply voltage which will be output from the power supply circuit and selects the constant voltage diode which will be connected to the first power supply line from among the plurality of constant voltage diodes.
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Citations
7 Claims
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1. A power supply system including a USB interface for performing a power supply operation from a power supply circuit via the USB interface, the power supply system comprising:
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a first power supply line of the power supply circuit that outputs a plurality of power supply voltages; a plurality of constant voltage diodes that each have breakdown voltages corresponding to the plurality of power supply voltages; and a control circuit that selects one of the plurality of power supply voltages as a power supply voltage which will be output from the power supply circuit and selects one of the plurality of constant voltage diodes which will be connected to the first power supply line according to the selected power supply voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification