BUY PVC550A-16 https://www.utsource.net/itm/p/8799029.html

PVC550A-16 is a module manufactured by EPCOS. It is a power factor controller module that is used to control the power factor of a power supply. It is designed to be used in AC/DC power supplies, and is suitable for use in applications such as motor drives, lighting systems, and industrial automation. Features: High efficiency Low power consumption Low harmonic distortion High power factor High reliability Easy to install and maintain Low cost Applications: Motor drives Lighting systems Industrial automation Power supplies Uninterruptible power supplies (UPS) Power factor correction (PFC) systems (For reference only)