Elektromagnetisk skärmning genom mekanisk omkonstruktion
This is a master degree thesis at Royal Institute of Technology (KTH) betweenÅngpanneföreningen and Programma. KTH is the examiner, Programma is the client andÅngpanneföreningen is mentor for this project.Programma has a product called TM1800 that has problems with EMC; the problem is thatthis product does only pass the CE-check with a small safety margin. This problem can besolved by reducing the radiation from the electric components in the product or by reducing offix base frame. In this degree thesis the focus is only on mechanical redesign.The main problems right now depends on the long distance between the screws, there is anisolating layer on most of the parts and the forces between the joints are too small. The mainfocus is to solve these three problems.The best solutions are when the whole base frame is more or less redesigned instead of onlyredesigning some of the connection points. This redesign is not so difficult and expensive torealise because the company that are producing this base frame are using a numerical machinethat is programmed by a CAD-model.If the EMC-construction starts earlier during the developing process will the engineers havemore possibilities to do a good construction and presumably will the base frame be better thenif you start with the EMC-construction in the end of the process.