On Friday 20 September 2019 10:17:01 Les Newell wrote: > Hi Peter, > > While we are discussing power for Ethernet Anything I/O, something > that would be really useful would be an on-board regulator that can > handle up to 30V. Nominal 24VDC is very common in industrial machines. > 5V is not always available. Every Ethernet Anything I/O installation > I've done so far has ended up needing a dedicated 5V supply, usually > derived from 24V. Just a thought for any future board revisions. > > Les > Having destroyed the whole shebang (2 bobs, a 5i25 and a 7i76D with a 24 to 5 volt buck card that failed shorted thru at less than 1/2 of its 2 amp rating, all replaced at a cost of around $175 before my G0704 came back to life again, Les, I am in favor of the separate 5v supply. I have a drawer full of those, but never again will I use one in a position where its failing shorted thru putting the whole 24 volt supply on the 5 volt line, will I have that much max 7 volt hardware on the load side of one of them. In fact because I needed the ability to reset the 7i76D, by doing a power cycle on the computer, its 5 volts now comes from the 5i25, and only 1 bob now has a separate 5v supply. > > > _______________________________________________ > 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) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
