For a great variety of machinery, control panels, and monitoring devices alike, having reliable and stable electrical power is essential to achieve the smooth performance that is expected for optimal operations. At the heart of this reliability is a device known as a transformer, a fundamental component of automation that allows for the regulation of voltage. Without transformers, automation processes would be exposed to risks like damage, downtime, and inefficiency. As such, it is important for engineers to understand how transformers are designed and function, showcasing how they prove essential for automation systems.