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测试直流电源有好几种方法，这里我们只介绍几种常用方法。
导通测试：您可以使用万用表的导通模式来完成此项测试。 用万用表表笔接触电源的正极和负极。 如果是导通的，万用表将会发出提示音。 这项测试旨在确定电源是否正在供电以及接线中是否存在断点。
电压测试：您可以使用万用表的直流电压模式来完成此项测试。 用万用表表笔接触电源的正极和负极。 万用表应当显示电源输出的电压。 对比该电压与电源的额定电压，确定其在正确的范围内。
负载测试：您可以将负载（如灯泡或电机）连接到电源，然后用万用表测量电压和电流。 电压应当保持稳定，且处在预期范围之内；电流应当在电源的额定电流范围内。
纹波测试：您可以测量电源输出电压的交流分量。 将示波器连接到电源的输出端子并测量电压纹波。 纹波电压应尽量低，并且在可接受的范围内。
请务必按照操作手册和安全指南的规定谨慎测试电源。 如果您对电子测试不熟悉，最好咨询专业人士或使用事先构建好的测试设备。
Its advantages include: Ultra-low jitterTrueform function/arbitrary waveform generators have jitter as low as 1 ps and excellent edge stability. You can even use them as system clocks for timing and triggering other instruments. Thanks to better jitter performance, you can locate edges more accurately, which helps reduce timing errors in circuit design. Ultra-low...
View Full VersionIn-phase quadrature modulation (IQ modulation) is the main modulation scheme used in communication applications. It is popular because of its efficient use of bandwidth, meeting the increasingly urgent need for bandwidth in a world where data volumes are growing exponentially. It is important to test with simulated IQ signals because designers are always faced with a lack of bandwidth in an interference-ridden spectrum. Example...
View Full VersionWhat does the frequency of electricity mean? Here are the basics of frequency, regionality, and measurement Since electricity and voltage are invisible things, many people will think they are elusive. But in fact, they are only invisible, and it is not difficult to understand them. Below, we will introduce the frequency basis of electricity and voltage in an easy-to-understand way, regional differences in frequency, and how...
View Full VersionVector network analyzers measure a wide variety of devices and networks and offer a wide range of measurements for a variety of usage scenarios, such as spectrum analysis, pulse measurements, power amplifier (PA) characterization, and active device testing. The following guide describes how to set up a network analyzer for measurements, calibrate the measurement system, and interpret the measurement results: The uses of VANs are so wide-ranging that each measurement...
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