RR Components, also known as passive components, are indispensable electrical elements that play a vital role in numerous devices and applications. Among the various RR components, transformers hold a crucial place due to their ability to transfer electrical energy between circuits and equipment. This response will delve into different types of transformers like LED transformers, SMPS transformers, line filter chokes, coil transformers, lamination transformers, drum coils, coil inductors, toroidal transformers, and their specialized applications such as CCTV SMPS adapters and reverse osmosis adapters. LED transformers are key components in LED lighting systems. They are designed to convert the high voltage AC power supply to low voltage DC power suitable for LEDs. These transformers ensure that the LEDs receive the appropriate voltage and current for optimal performance and longevity. LED transformers come in various power ratings to match different LED lighting setups, making them versatile and widely used in residential, commercial, and industrial lighting applications. Switched-mode power supply (SMPS) transformers are essential in power conversion circuits prevalent in electronic devices such as computers, telecommunications equipment, and consumer electronics. SMPS transformers facilitate efficient power conversion by transforming and regulating electrical energy between different voltage levels. Their compact size, high efficiency, and light weight make them ideal for modern electronics where