This document contains 50 code topics related to various power electronics and converter applications. The topics cover areas like boost converters, buck-boost converters, isolated converters, high step-up converters, inverters, and control techniques for photovoltaic systems and motor drives. Control strategies discussed include maximum power point tracking and power factor correction. Converter topologies described include multi-level converters, isolated converters using transformers, and converters with voltage multiplier circuits. Applications mentioned are for energy harvesting, renewable energy systems, battery storage, LED lighting, and motor drives.