do floppy drives need a switching p/s? - test-drb@ccmp.vtda.org

17 Feb 2006

...
 From: ard at p850ug1.demon.co.uk

  behind the drive.  Works fine on a Qume DT-8. 
That 24vdc supply you
 mention should do just fine, but the 5vdc draw may be heavier than you
 think, particularly if you have the standard 220/330 terminators installed. 
I've yet to see a floppy drive that used 220/330 ohm terminators. Every 
one I've worked on just has a 150 ohm resistor to the +5V line. It'll 
still draw the current if that line is pulled low, though.

-tony 

Hi
 Still, he isn't going to get his 5 volts from the 24 volt
supply.
Dwight