POWER TESTING APPARATUS FOR UNIVERSAL SERIAL BUS INTERFACE
First Claim
1. A power testing apparatus for a USB interface, comprising:
- a first USB interface configured to connect to a circuit board;
a second USB interface configured to connect to a USB device; and
a simulation apparatus comprising;
a first voltage regulator comprising an input terminal, an output terminal, and an adjusting terminal;
a first resistor connected between the output terminal and the adjusting terminal of the first voltage regulator;
a second resistor connected between the adjusting terminal of the first voltage regulator and ground; and
a load resistor connected to the output terminal of the first voltage regulator and ground;
wherein signal pins of the first USB interface are correspondingly connected to signal pins of the second USB interface, a voltage pin of the first USB interface is connected to a voltage pin of the second USB interface and the input terminal of the first voltage regulator.
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Accused Products
Abstract
A power testing apparatus for a USB interface includes first and second USB interfaces, and a simulation apparatus. The simulation apparatus includes a first voltage regulator, first and second resistors, and a load resistor. The first USB interface is configured to connect to a circuit board. The second USB interface is configured to connect to a USB device. The first voltage regulator includes input, output, and adjusting terminals. The first resistor is connected between the output terminal and the adjusting terminal. The second resistor is connected between the adjusting terminal and ground. The load resistor is connected to the output terminal and ground. Signal pins of the first USB interface are connected to signal pins of the second USB interface. A voltage pin of the first USB interface is connected to a voltage pin of the second USB interface and the input terminal.
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Citations
10 Claims
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1. A power testing apparatus for a USB interface, comprising:
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a first USB interface configured to connect to a circuit board; a second USB interface configured to connect to a USB device; and a simulation apparatus comprising; a first voltage regulator comprising an input terminal, an output terminal, and an adjusting terminal; a first resistor connected between the output terminal and the adjusting terminal of the first voltage regulator; a second resistor connected between the adjusting terminal of the first voltage regulator and ground; and a load resistor connected to the output terminal of the first voltage regulator and ground; wherein signal pins of the first USB interface are correspondingly connected to signal pins of the second USB interface, a voltage pin of the first USB interface is connected to a voltage pin of the second USB interface and the input terminal of the first voltage regulator. - View Dependent Claims (2, 3, 4)
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5. A power testing apparatus for USB interface, comprising:
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a first USB interface configured to connect to a circuit board; a second USB interface configured to connect to a USB device; and a simulation apparatus comprising; a first voltage regulator comprising an input terminal, an output terminal, and an adjusting terminal; a first resistor connected between the output terminal and the adjusting terminal of the first voltage regulator; a second resistor connected between the adjusting terminal of the first voltage regulator and ground; and two or more load resistors connected in parallel, each of the load resistors connected to a switch in series between the output terminal of the first voltage regulator and ground; wherein signal pins of the first USB interface are correspondingly connected to signal pins of the second USB interface, a voltage pin of the first USB interface is connected to a voltage pin of the second USB interface and the input terminal of the first voltage regulator. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification