FAQ (Frequently Asked Questions)
1. Engineering and Laboratory FAQQuestion: Is the "True RMS" function a must when buying a multimeter?Answer: Yes, True RMS is important, especially if you are repairing modern electronic devices (computer power supplies, LED drivers). Standard multimeters can measure non-sinusoidal signals with an error of up to 40%, while True RMS gives an accurate result.Question: Can isopropyl alcohol (IPA) harm motherboards when cleaning them?Answer: No, on the contrary. IPA, which is 99.9% pure, is the safest cleaner for electronics. It does not harm plastic and metal parts and evaporates quickly, eliminating the risk of short circuits.Question: How important is bandwidth when choosing an oscilloscope?Answer: Bandwidth determines the maximum signal frequency that the device can measure. For example, a 100MHz oscilloscope is ideal for viewing signals of 20-30MHz with full accuracy. It is recommended to choose a device with a bandwidth at least 3-5 times greater than the frequency of the signal you will be working with.