I have a keen interest in keeping clean DC power flowing to my equipment at all times. As obvious, we can't always trust power supplies to be clean, and even in a direct to battery mobile situation, noise could possibly still be injected into power leads. I see a lot of commercialized "DC power conditioners" and "DC filters" that I can buy - but I'm cheap, handy with a soldering pencil, and enjoy making simple devices that benefit me in some form. I'd like something simple. Perhaps a chain of capacitors contained within a small project box that could be inserted in line with power leads? Could it be that simple? Or will I need to wind some chokes and install as well? If anyone can point me to some online plans, that'd be awesome too. Thanks!