A conveyor system for processing items on which radio frequency identification tags are disposed includes a frame and a conveyor that is disposed moveably on the frame and that conveys items through a path of travel, each item having at least one respective radio frequency identification tag disposed thereon. The transformer comprising a laminated core, first, second and third coils constructed on the laminated core, each coil including several windings. At least one metal reinforcement part andor support part isare attached to the metal carrier element.