Dear Steve
How about this? I take a piece of SS - a sheet perhaps 2mm I weld on top of it using a MIG welder, a spot about 15mm in diameter, perhaps 0.75mm thick. I put several of them next to each other but not touching. Will they operate as separate cells? Can I put them in series by MIG welding a wire across the top of them? Is there any advantage to this compared with welding a line along the SS and attaching a single wire to the top of the strip? I presume the contact area is the important issue (to current) and it makes no difference. To get additional voltage there has to be a a cold junction in between each so piling up MIG-spots won't help much. Considering that MIG wire can be obtained in many materials (hardfacing wire might be a candidate) ig may be the best way to get a secure connection at low cost. Thanks Crispin
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