Full-automatic on-line test approach of ballast and tester

Abstract

The invention relates to a full-automatic on-line testing method of a ballast, the first step is that an alternating current power supply is added to the input end of the ballast; the second step is that an inductive current detection circuit sequentially and continuously carries out sampling and measurement; the third step is that the cumulative summation and the comparison is carried out on the results of the second step; and the fourth step is that the results are transmitted to a computer by a power interface. A device for implementing the method adopts analog resistance load, the testing steps and the output types are automatically combined, thus implementing the self-correction of the system error, carrying out the real-time printing of the unqualified report for output and recording all the testing data. The full-automatic on-line testing method can rapidly and accurately measure various input and output parameters of the ballast, judge the quality of the ballast, automatically combine the testing steps and the output types, be applicable to the different types of the tests of the ballast, implement the self-correction of the system error, ensure the accuracy of the testing data of the test, carry out the real-time printing of the unqualified report for output, record all the testing data and be conductive to the process control and the quality management of the production of the product.

Description

technical field [0001] The invention relates to electronic product testing, in particular to a full-automatic on-line testing method and testing instrument for ballasts. Background technique [0002] Ballast, also known as current limiter, inductive ballast is a coil with an iron core, which has two functions: one is that it generates a high induced voltage when the fluorescent lamp is started, so that the lamp tube is ignited, and the other is that the lamp When the tube is working, the current through the lamp tube is limited so that it will not burn the filament too much. The general magnetic ballast has only two connectors, and there is another ballast with four connectors. The working principle of this ballast is basically the same as that of the two connectors, except that a set of auxiliary coils (secondary coils for short) are added. ), the auxiliary coil assists the main coil to complete the starting work, so that the performance of the ballast is further improved....

AI Technical Summary

Problems solved by technology

[0004] In the test, due to the long stabilization time of the fluorescent lamp, it is also greatly affected by the ambient temperature, so it is difficult to achieve a fast and stable test

The output open-circuit voltage of electronic ballasts is generally greater than 500 volts, and the frequency is 30-100kHz. The distribution parameters of the test system will also cause errors in the test, which will affect the accuracy of the test.

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