[sdiy] Fuse

[Paul Perry]

>----- Original Message From: "Oscar Salas"
> If you reverse the polarity of a module or an accidental short occurs, the 
> fuse blow up, >and all is save. End of the problem.

End of the module, more likely! Because, the current that blows the fuse.. 
it's high because it is an excessive current running (the wrong way!) 
through your components. By the time the fuse blows, one or more components 
are almost sure to be destroyed.

Good fusing is likely to save the power transformer, and (one hopes) limit 
the exceass current so that a fire is unlikely, but it isn't going to 
protect your chips, for example.

paul perry Melbourne Australia

paul perry Melbourne Australia