The Design of Smart and Multi-channel Sampling Circuits with Pre-correction Function

摘要

Current sampling is used in the vast majority of auto lamp test system and the testing and controlling system of other products. It can observe and record the current value in the detection process, with the purpose to judge whether the various features of the products can meet the test standard. Based on the testing demand of mass production, this design devised a smart and multi-channel sampling circuit with pre-correction function, which ensures the stability and accuracy of sampling circuit. This circuit has the characteristics of small volume and good heat dissipation, has a good automatic judgment function (upper and lower limit), and has other functions such as preserving and summarize the record of all test data.