Applications of power electronics: Solid-state controllers for home appliances Light dimmers in home and theatres Switch-mode-power-supply (SMPS) and Uninterruptible-power-supply (UPS) Power supply for air-craft, space shuttle and satellites AC and DC drives in rolling mills, paper mills, textile mills, cement mills etc. Solid-state-controllers for mine winders, cranes, elevators, lifts, excavators etc. Solid-state-controllers for traction vehicles. Power control in chemical processes, metallurgical processes. HVDC transmission Active power filters and reactive power compensators in power system Static circuit breakers High voltage supplies for electrostatic precipitators, X-ray machines.