Current-voltage electrode

Abstract

The invention relates to a current-voltage electrode, comprising a current electrode and a voltage electrode, wherein the voltage electrode is a metal probe, and a voltage signal line terminal is led out from one end of the voltage electrode; the current voltage is internally provided with an insulating medium which wraps the voltage electrode; the current electrode is provided with a current line leading-out terminal; and the voltage electrode has an elastic and telescopic structure and is used for compacting structural testing points when the testing points of a tested object sample voltage signals. In the current-voltage electrode disclosed by the invention, an insulating medium layer is arranged between the voltage electrode and the current electrode; when in test, the voltage electrode and the current electrode are separated, voltage signal sampling points are accurate, the current electrode samples current signals, the contact area is large and the contact is uniform; and for a tested object with a large volume and irregular shape, the shape of the contact surface between the current electrode and the tested object can be changed according to the shape and the size of the tested object, so that the contact is good, the testing accuracy is high and the use is convenient.

Description

technical field [0001] The invention relates to a sampling electrode, in particular to a voltage and current electrode used for pressing a tested product and leading out a test line for sampling the voltage and current signals of the tested product. Background technique [0002] In the field of electrical testing, especially in the resistance test of the four-terminal method, in order to eliminate the influence of the test lead resistance and the contact resistance between the sampling equipment and the tested product on the current and voltage test results, the industry often uses current in the tested product. Then use the voltage sampling electrode to obtain the voltage difference between the two ends of the tested object. [0003] When sampling the voltage signal and current signal of the tested product, the method of alligator clip leads is usually used to obtain the voltage and current signals from the two ends of the tested product, but the connection between the croc...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the voltage sampling contact surface is large, the test error is large, and the voltage and current signals cannot be obtained for the test product with large volume and irregular shape, and to provide a voltage and current electrode that can be tested on the test product. Obtain the voltage signal at one point, reduce the test error, and be able to test the voltage and current signal of the test object with large volume and irregular shape

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