Re: Clarifications needed - 5 volts

Harvey,

A TL783C has a 125V input to output differential. We use them in our
drives for the low voltage supplies.

Mariss

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Harvey White <madyn@i...>
wrote:

> On Sat, 13 Sep 2003 16:01:13 -0000, you wrote:
>
> >
> >I recently boxed up a gecko to make a single axis control for an
> >experiment I am doing as part of my Phd. I didn't want to have

extra

> >cables comming from the PC so put a 5v regulator in the box and
> >connected this up to the main motor supply. This works fine as I
> >linked the 0v of the port and supply.
> >
> >Stepping 80v down to 5v might have ramifications (such as a hot
> >regulator) and perhaps this is a bad way to do things as far as
> >isolation goes??
>
> I'm surprised that you found a regulator that could handle the 80

volt

> input. it's got to get rather hot at that voltage, if it won't just
> blow up.
>
> I'd get a radio shack wall wart supply, and just wire that in, using
> the 5 volt regulator... You only need 8 to 12 volts... a 9 volt

supply

> would be just fine... Assuming a 7805 type of regulator, 1 to 1.5

amps

> is all the regulator will handle, but I do not know the requirements
> of the Gecko...
>
> Harvey
>
>
> >
> >Graham
> >
> >
> >
> >
> >