The document discusses a seminar presentation on Magneto Optical Current Transformers (MOCT). It begins with an introduction on the need for accurate current transformers and limitations of conventional transformers. It then covers the principles and workings of MOCT, which uses the Faraday effect to measure current through a glass prism. The document outlines the design, block diagram, applications and advantages of MOCT over conventional transformers, such as immunity to electromagnetic interference. It concludes by stating MOCT eliminates many drawbacks of conventional current transformers.