On Saturday, 2 April 2022 23:51:58 EDT Chris Albertson wrote: > What are you searching for? You don't really need the optical > isolator if the VFD and computer grounds are tied together. If you > do want isolation then almost any optical isolator will work Even > those "C" shape sensors will do the job,
And quite likely they can also do the voltage boost to a 10 volt swing needed at the output, and 20x faster than the typical 4 pin opto. I'd put them in the dark with a heat shrink sleeve though. > The resistor and the > capacitor are essential but their values are not critical as long as > the product of the R and C adds up to about the same. I'm not convinced the filter would be needed, the vfd will generally have its own filter. > On Sat, Apr 2, 2022 at 8:32 PM Leonardo Marsaglia > <ldmarsag...@gmail.com> > wrote: > > Well, a quick search gave me ZERO results here. The only results were > > at ar.mouser.com but mouser is not established here AFAIK, it looks > > like their > > spanish site is from Mexico. > > > > El sáb, 2 abr 2022 a las 19:15, gene heskett (<ghesk...@shentel.net>) > > > > escribió: > > > On Saturday, 2 April 2022 17:14:41 EDT Andy Pugh wrote: > > > > > On 2 Apr 2022, at 04:33, Leonardo Marsaglia > > > > > <ldmarsag...@gmail.com> > > > > > wrote: > > > > > > > > > > Well, I can try that but I recall we did a simple low pass > > > > > filter > > > > > years ago > > > > > > > > This works, and is isolated. > > > > https://photos.google.com/share/AF1QipPXuj4R1h7P3oLpKCcGnfS-mFd-qO5nF > > Pe> > > > > WEY-40VKkLIfDkAhSi7m4YDPVm0JCGQ/photo/AF1QipPEONYllA-BBGWD6cOLXsS > > > > WFnCU3 X27btSueFJs?key=dDNfajB5TTZDalphY2dKamtVeDdrcTRJaGZqdmZR > > > > > > And that is exactly what the doctor ordered. Thanks Andy. > > > > > > But can Leonardo src it in his reach? > > > > > > Cheers, Gene Heskett. > > > -- > > > > > > "There are four boxes to be used in defense of liberty: > > > soap, ballot, jury, and ammo. Please use in that order." > > > > > > -Ed Howdershelt (Author, 1940) > > > If we desire respect for the law, we must first make the law > > > respectable.> > > > > - Louis D. Brandeis > > > > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > -- > > Chris Albertson > Redondo Beach, California > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
