do floppy drives need a switching p/s?

[Tony Duell]

> >
> >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.

Why not? IIRC there's enough power to supply both rails. A reasnable 
step-down switching regulator circuit would have enough efficiency to 
supply 5V at 1A and only draw, say, 1/4A from the 24V supply. You can't 
use a linear regulator, though.

-tony