Re: Spindle Relay Question

--- In CAD_CAM_EDM_DRO@yahoogroups.com, JanRwl@A... wrote:

>
> In a message dated 5/26/2005 5:14:19 P.M. Central Daylight Time,
> volitan@o... writes:
>
> So I
> should be able to use that 12 volts to drive a mechanical relay,
> switched on and off with a small SSR that would be switched by the
> computer port?
>
>
>
> For that "small SSR" in this case use either the ULN2004 or the 75477.

Check the specs on the SSR, it may be able to be driven directly by
the Parallel Port. Many have an optoisolator as the input and only
need a few mA.

Dave