When repairing a circuit board, we sometimes need to measure the potential at a certain point on the board to determine where the problem lies. The reference point is usually chosen as the negative terminal of the power supply, which is the GND ground line. Therefore, knowing how to quickly locate the ground line on … Read more
How to Measure the Quality of Small Capacitors? 1. To test small capacitors below 10pF, since the capacitance of fixed capacitors below 10pF is too small, using an analog multimeter can only qualitatively check for leakage, internal short circuits, or breakdown phenomena.When measuring, you can use the multimeter on the R×10k setting, connecting the two … Read more
Content: As the automation level of textile equipment increases, components such as inverters and PLC circuit boards have become essential parts of textile machinery. However, as the equipment operates for many years, circuit board failures occur frequently, leading to rising maintenance costs for enterprises. Based on years of practical experience, I have summarized some tips … Read more