Current testing device, current testing method and electronic equipment

Abstract

The invention discloses a current testing device which comprises a sampling module, a gain adjusting module and an upper computer. The sampling module is used for collecting differential signals at the two ends of the sampling resistor and feeding back the differential signals to the gain adjusting module, and the gain adjusting module is used for determining sampling current according to the differential signals and feeding back the sampling current to the upper computer. The upper computer adjusts the gain of the gain adjusting module according to the sampling current so as to change the acquisition range of the current testing device. According to the current testing device disclosed by the invention, the sampling current is determined according to the differential signals at the two ends of the sampling resistor, and the gain is adjusted according to the sampling current, so that the acquisition range of the current testing device is changed, and meanwhile, the precision of the current testing device can be adjusted, so that the measurement precision corresponds to the acquisition range; under the condition that the current testing device is not replaced, accurate measurement of currents of different magnitudes can be ensured. The invention further discloses a current testing method and electronic equipment.

Description

technical field [0001] The present application relates to the technical field of current testing, in particular to a current testing device, a current testing method and electronic equipment. Background technique [0002] In the related art, for the same current testing device, its range is usually fixed, and the range cannot be changed according to the size of the test current, and the test accuracy of the current test device is also fixed, and the test accuracy cannot be adjusted according to the size of the test current. transformation. When the fluctuation range of the sampling current is large, in order to ensure that the currents of different magnitudes can be accurately measured, it is necessary to replace the current testing devices with different ranges, and the testing process is relatively cumbersome. Contents of the invention [0003] In view of this, an embodiment of the present application provides a current test device, the current test device includes a sa...

AI Technical Summary

Problems solved by technology

[0002] In the related art, for the same current testing device, its range is usually fixed, and the range cannot be changed according to the size of the test current, and the test accuracy of the current test device is also fixed, and the test accuracy cannot be adjusted according to the size of the test current. transformation

When the fluctuation range of the sampling current is large, in order to ensure accurate measurement of currents of different magnitudes, it is necessary to replace the current testing device with different ranges, and the testing process is cumbersome.

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