Power supply modules are a type of electronic component that provides a reliable power source to devices that require a consistent, stable voltage. These modules are typically used in industrial and medical applications, where they are used to power sensitive and critical electronic devices. Power supply modules typically consist of a transformer, rectifier, and regulator, which convert and regulate AC and DC voltages to the desired voltage level. In some cases, the power supply module will also have a filter to ensure clean, ripple-free power. The output voltage and current ratings of a power supply module depend upon the type and power rating of the device in which it is used.