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Connecting inductive loads like motors and solenoids to a standard DC power supply can trigger unexpected shutdowns or permanent damage from Back EMF. Learn what causes reverse current, how it trips OVP or burns out MOSFETs, and the four proven methods engineers use to protect their DC rail, including specialized supplies like the MEAN WELL XTR and XDR series.

Power supply derating determines how much output power a unit can safely deliver as temperature, altitude, airflow, and enclosure conditions become more demanding. This guide explains how to read derating curves, avoid common thermal design mistakes, and apply proper cooling, spacing, and installation practices to improve power supply reliability in real-world applications.