The transerformer is the part of electricity it works dc to ac and ac to dc it has no rotating part its part has conservator and ttansformer tank and transformer oil and brreder it has two winding peimary winding and secondry winding it works very high speed in the electucity I know it is a very good part in the electicity iknow use in the electricity poles on the lightining system iwnt to know in the use of high speed net speed on the lightining system on the user inthe harmonium to the electical subject