For my high school electronics course I was given an item and told to identify it. I believe I have been given a ei control transformer. But, I am not sure and need any guidance on what I have and the use of it in industry. I am really stumped on the connection labeling specifically what the purpose of the 5 prongs on the one side are for. I took pictures of what I have here: http://www.flickr.com/photos/38014893@N05/