This circuit image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}. It is recommended to name the SVG file “Norton step 2.svg”—then the template Vector version available (or Vva) does not need the new image name parameter.
(In short, this means that you can copy and modify the image freely as long as you provide attribution; preferably in the form of a link back to this page.)