DFRobot Power Filter Board for Raspberry Pi 3B+/ 4B

DFRobot Power Filter Board for Raspberry Pi 3B+/ 4B integrates multiple solid capacitors, ceramic capacitors, and tantalum capacitors to perform parallel hybrid filtering. This filter board can filter low-mid-high frequency power noise in the power supply which provides the whole system with a stable power supply and makes sound quality pure. The power filter board can also effectively protect the Raspberry Pi main controller to extend the service life. The filter board can be directly plugged into the module to the Raspberry Pi GPIO port for use. When used with an audio decoder board, the filter board turns Raspberry Pi into a high-quality stereo.