分析了VGA有源矩阵液晶显示器的缺陷分类、产生原因。研制出了有源矩阵液晶显示器的断路测试板、短路测试板以及全板显示测试板。
The defect classification and the reason forming defect of VGA thin film transistor active matrix liquid crystal displays are analysed. Open tester, short tester and display tester are developed.
作者结合工作心得，对非固有耐短路、无危害式安全变压器的短路和过载保护测试方法进行了总结和归纳。
With working experience, the author has summarized the test methods of short circuit and overload protection of non-inherently short-circuit proof transformer and fail-safe transformer.
变压器在运行中可能发生绕组变形，测试绕组变形的方法主要有频响法和短路阻抗法。
Winding distortion may happen during transformer operation. Frequency response and short impedance are the main methods to test winding distortion.
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