NoobMan Wrote:
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> So board doesnt get saved, not much. Something
> will burn, something will fail.
Obviously, that is the point of a fuse. Its a sacrificial component, a cheap thing designed to protect the expensive things.
A PTC "fuse" works by increasing resistance according to current, so it won't be conducting 40A. Dissipating 348W is obviously absurd, that is a straw man. Tbh, I don't think you have really grasped what the goals and methods are here.
Overvoltage, ESD protection etc are standard stuff for electronics designers, any commercial product is required to have them for CE and safety standards. I'm not an electronics designer, but I work with them. We have guys who spend all day in the lab running tests, including blowing things up, eventually they pass and we can put the CE sticker on them. Well, that is quite a simplification but that's what it looks like :)
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> So board doesnt get saved, not much. Something
> will burn, something will fail.
Obviously, that is the point of a fuse. Its a sacrificial component, a cheap thing designed to protect the expensive things.
A PTC "fuse" works by increasing resistance according to current, so it won't be conducting 40A. Dissipating 348W is obviously absurd, that is a straw man. Tbh, I don't think you have really grasped what the goals and methods are here.
Overvoltage, ESD protection etc are standard stuff for electronics designers, any commercial product is required to have them for CE and safety standards. I'm not an electronics designer, but I work with them. We have guys who spend all day in the lab running tests, including blowing things up, eventually they pass and we can put the CE sticker on them. Well, that is quite a simplification but that's what it looks like :)