STEVE TOMES wrote:
>
> Picsters....
>
>       I am curently working with high gauss miniature magnets.....
>       I know that they can destroy a hard drive and floppy disk..but how
> do they effect a pic...and eprom????  Can they be shielded as you       would
> shild an RF design??  Also would they create a problem in       close
> proximity to a Switcher type circuit?

Yes.

Too many questions in too many directions.
They can't affect a pic, it's memory is stored differently. Eprom is
same.
You can shield magnetic fields, although what you really do is more akin
to shorting them out rather than reflecting or absorbing. Mu-Metal is
used here, because it provides an excellent path for flux lines to
complete through.

They can kill a switcher, or help it operate(!)  If you saturate a
switcher's core with the magnet, it will fail, usually catastrophically.
However, you can use a magnet to bias a switcher's inductor in the
opposite direction to the current flux, and double the power handling
capability of a given inductor at a given frequency.