Principle of operation of: power semiconductor devices; single-phase and three-phase uncontrolled and controlled rectifiers feeding resistive and inductive loads; step-down (buck) and step-up (boost) DC-DC converters; Other types of DC-DC converters; AC voltage controllers; half-bridge and full-bridge single-phase and three-phase inverters feeding inductive loads; Power electronics in renewable (solar and wind) energy sources; DC motor drives; AC motor drives.