On an ASIC miner power supply, what is a rectifier bridge stack? What is a diode? Why should relays and thermistors be installed during circuit design? What is the role of optocoupler in the PSU? For professional masters who repair power supplies, these are all things that must be mastered, and then they can accurately find the abnormalities that need repair based on the fault logs. Based on the original intention of serving customers, ZMRC has organized a professional and systematic course on power supply components, explaining in detail the role of each component, how to correctly remove and re-solder these parts.