Importance

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Abstract

A linear voltage regulator is disclosed. The voltage regulator is configured and controlled such that its output current is substantially equal to the input current. A test system for measuring electrical current consumption of a device under test (DUT) is disclosed. The test system comprises a controller coupled to a power capacitor, a voltage regulator, and a switching circuit. The controller may be configured to: control the switching circuit to place the test system into a charging state to charge the power capacitor with the DC voltage source, at a first time point, control the switching circuit to place the test system into a measurement state such that the power capacitor provides the capacitor voltage to the voltage regulator, and at a second time point after the first time point, calculate electrical current provided by the power capacitor.

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First Claim