TEST DEVICE AND ALTERNATING CURRENT POWER DETECTION METHOD OF THE SAME
First Claim
1. A test device comprising:
- a plurality of test components;
a plurality of power supplies electrically coupled in parallel each to receive an alternating current (AC) power through a first wire, a second wire and an earth wire to convert the AC power to a direct current (DC) power and supply the DC power to the test components;
an AC power detection circuit electrically coupled to the power supplies in parallel to receive the AC power through the first wire, the second wire and the earth wire, wherein the AC power detection circuit determines whether a first voltage difference between the first wire and the earth wire is outside of a first predetermined range and determines whether a second voltage difference between the second wire and the earth wire is outside of a second predetermined range; and
an alert module;
wherein when the first voltage difference is outside of the first predetermined range and the second voltage difference is outside of the second predetermined range, the AC power detection circuit controls the alert module to generate an alerting signal.
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Accused Products
Abstract
A test device is provided. The test device includes test components, power supplies, an alternating current (AC) power detection circuit and an alert module. The power supplies convert an AC power through a first wire, a second wire and an earth wire to a direct current (DC) power and supply the DC power to the test components. The AC power detection circuit receives the AC power through the first wire, the second wire and the earth wire to determine whether both of voltage differences between the first wire and the earth wire and between the second wire and the earth wire is outside of respective predetermined ranges. When both of the voltage differences are outside of the corresponding predetermined range, the AC power detection circuit controls the alert module to generate an alerting signal.
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Citations
16 Claims
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1. A test device comprising:
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a plurality of test components; a plurality of power supplies electrically coupled in parallel each to receive an alternating current (AC) power through a first wire, a second wire and an earth wire to convert the AC power to a direct current (DC) power and supply the DC power to the test components; an AC power detection circuit electrically coupled to the power supplies in parallel to receive the AC power through the first wire, the second wire and the earth wire, wherein the AC power detection circuit determines whether a first voltage difference between the first wire and the earth wire is outside of a first predetermined range and determines whether a second voltage difference between the second wire and the earth wire is outside of a second predetermined range; and an alert module; wherein when the first voltage difference is outside of the first predetermined range and the second voltage difference is outside of the second predetermined range, the AC power detection circuit controls the alert module to generate an alerting signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An AC power detection method used in a test device comprising:
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electrically coupling a plurality of power supplies in parallel each to receive an AC power through a first wire, a second wire and an earth wire to convert the AC power to a DC power and supply the DC power to a plurality of test components in the test device; electrically coupling an AC power detection circuit to the power supplies in parallel to receive the AC power through the first wire, the second wire and the earth wire; determining whether a first voltage difference between the first wire and the earth wire is outside of a first predetermined range and determines whether a second voltage difference between the second wire and the earth wire is outside of a second predetermined range by the AC power detection circuit; and when the first voltage difference is outside of the first predetermined range and the second voltage difference is outside of the second predetermined range, controlling an alert module to generate an alerting signal by the AC power detection circuit. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification