Current measuring device and current measuring method thereof
A current measurement device and electrical connection technology, applied in the direction of measurement device, measurement of electrical variables, measurement of magnetic variables, etc., can solve problems such as affecting the accuracy of current measurement, high power loss, increasing circuit complexity, etc., to achieve automatic magnetic reset, The effect of reducing working time and measuring power consumption
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[0028] In order to have a clearer understanding of the technical features, objectives and effects of the invention, specific embodiments of the invention will now be described with reference to the accompanying drawings. The same reference numerals in each figure indicate components with the same structure or similar structures but the same functions.
[0029] figure 2 In an exemplary embodiment of the current measuring device of the present invention, it includes a magnetic ring 12, a coil 10, a sampling resistor 14, a driving voltage source 18, a comparator 16, a first feedback unit 30 and a second feedback unit 20.
[0030] The conductor 11 that can pass the current (DC or AC) to be measured passes through the magnetic ring 12, the coil 10 is wound on the magnetic ring 12, the sampling resistor 14 is connected in series with one end of the coil 10, and the other end of the coil 10 is connected to the drive voltage source 18 The output terminal can be electrically connected, and ...
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