Hi all. I have a bunch of former cell phone chargers. They are all
really nice looking SMPS in small wall wart style. I have two groups,
one that puts out 5.5V at 500mA, and one that puts out 5.3 at 500mA. My
problem is this: since they are really close to 5V, I can't use a 7805
on them. Would a SMPS be voltage stable by definition? Do I need try
regulation, or would a regular diode or two to drop voltage be enough?
Should I use a 5.1V zener instead?

These aren't for any sort of commercial project, just my own little
homebrew things.

Thanks,

Josh
--
A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
        -Douglas Adams

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.