Re: [CAD_CAM_EDM_DRO] Re: Clarifications needed - 5 volts

On Sat, 13 Sep 2003 16:01:13 -0000, you wrote:

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>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

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>Graham
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