Assuming I need to put my project in a plastic enclosure because its outside may come into contact with other electronics, what would be the best way to shield the enclosure?
One of the solutions I'm considering is a double- or triple-coat spray of MG #841. Other options include lining the inside of the enclosure with copper or aluminum foil. Which one would be most likely to reduce external interference?
Also, whichever of those would work best, would they work better (or worse) if I tied the shielding to ground? For grounding the spray coating, I would glue a #2-56 nut to the inside of the case prior to spraying and cover the top (so the spray can make contact with the sides of the nut), then fasten a wire lug that is attached to the circuit's ground. Grounding the foil would be a good deal simpler, I could just solder a wire directly to the foil.
I realize my shielding ideas are probably overkill, but I'm just curious what method would be best, on a theoretical level. Also, if the spray method would be better than either foil but only marginally so, that would be good to know (in which case I'd probably go with the foil due to ease of application/installation, as well as cost).
One of the solutions I'm considering is a double- or triple-coat spray of MG #841. Other options include lining the inside of the enclosure with copper or aluminum foil. Which one would be most likely to reduce external interference?
Also, whichever of those would work best, would they work better (or worse) if I tied the shielding to ground? For grounding the spray coating, I would glue a #2-56 nut to the inside of the case prior to spraying and cover the top (so the spray can make contact with the sides of the nut), then fasten a wire lug that is attached to the circuit's ground. Grounding the foil would be a good deal simpler, I could just solder a wire directly to the foil.
I realize my shielding ideas are probably overkill, but I'm just curious what method would be best, on a theoretical level. Also, if the spray method would be better than either foil but only marginally so, that would be good to know (in which case I'd probably go with the foil due to ease of application/installation, as well as cost).