In electronics, transformers are a very crucial component.  Every electronics component needs required energy to operate but the supply of energy we get from the main is very high so obviously, we do not need that much energy to operate a tiny circuit, and to make that AC Power down to our required on we use a transformer. In RoboElements we have all sorts of transformers according to your need such as 12V 12-0 1Amp Step Down Transformer, 12v 12-0-12 2A Center Tapped Step Down Transformer, and many more.