Re: [CAD_CAM_EDM_DRO] +5V

On Sun, 17 Mar 2002, meneercen wrote:

> >From previous posts, it is clear that the best solution to provide
> the +5V for the Gecko drives is to tap it from the PC itself.
> However, if one is to use a notebook computer, even if that can be
> done easily, I think one would be very about tapping the +5V from the
> notebook. I hope to provide for an independent source of +5V from the
> power supply of 48V. What is the best way to provide for this?
>
> Thanks in advance.

If the +5V is for logic levels (i.e., it's not supposed to be supplying a
huge amount of current), your best bet is probably a voltage divider and a
7805 voltage regulator. The purpose of the voltage divider is to dump it
down enough to get it inside the operating range of the 7805. Getting it
down to 12V with the divider would probably do the job. The 7805 is to
get it the rest of the way down to 5V, and to provide regulation in case
your source fluctuates.

Tom