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From: dlou@sdcc13.ucsd.edu (Dennis Lou)
Newsgroups: sci.electronics,comp.sys.ibm.pc.hardware
Subject: Need FD power info
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Date: 18 Oct 90 16:12:25 GMT
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I had two floppy drives that I mounted in an external case.  Then I
hooked up an old switcher supply I had to it (this thing has no load
protection, right? :-) and promptly blew both my floppies.

Anyway, I bought two new floppy drives, mounted them in the case,
and now I'm about to build a linear supply for it.  One drive is a
1/2 height 5.25 and the other a 1/2 height 3.5 inch.

Does anyone know what the typical current draw is on a 1/2 height
5.25 inch drive?  How about a 3.5 inch drive?  IBM XT Tech Ref says
900mA on 12V and 600mA on 5V, but these are for a full height
floppy.  I was hoping 1/2 heights draw less than full heights...

Will one TO-3 packaged 7812/7805 pair do the trick, or will I have
to use multiple TO-220's?

-- 
Dennis Lou             |
dlou@ucsd.edu          | "But Yossarian, what if everyone thought that way?"
[backbone]!ucsd!dlou   | "Then I'd be crazy to think any other way!"