Power conversion is the process of changing electrical energy from one form to another. This can involve converting alternating current (AC) to direct current (DC), or vice versa. Devices like inverters and rectifiers are commonly used in this process to ensure that electrical energy can be used efficiently in various applications, such as powering electronic devices or renewable energy systems. In addition to AC and DC conversion, power conversion can also involve changing voltage levels. Transformers are used to step up or step down voltage, making it suitable for transmission over long distances or for use in household appliances. This ensures that electrical energy is delivered safely and effectively to meet different needs.