>I'm not sure that "jumpering across" the 7805 will be healthy for the 7805.
>Of course, if the input doesn't drop below the output during shutdown this
>may not be a concern.
Maybe I was unclear on what I meant by "jumpering across": you put a
wire between pin 1 and pin 3 of the regulator. With such a jumper,
it's impossible for the input to drop below output at the regulator.
Of course, you've got to remember to remove the jumper before putting
the resulting card back into a system with unregulated power busses!
Like I said, regulated S-100 power busses were done by several manufacturers
in the early and mid-80's with great success. It's a non-issue.
--
Tim Shoppa Email: shoppa_at_trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
Received on Tue Aug 17 1999 - 19:47:24 BST