When in doubt, use an isolated DC/DC converter (Meanwell RSD, etc). On Tue, Dec 8, 2015 at 6:35 AM, Gino Villarini <[email protected]> wrote:
> Forrest, thanks for your input, so how the negative input could get > grounded? further on on the radio side? > > On Tue, Dec 8, 2015 at 7:22 AM, Forrest Christian (List Account) < > [email protected]> wrote: > >> Depends on the unit, and how truly isolated everything is. >> >> I know some models which don't tie either polarity so the isolation isn't >> necessarily. I know of others which won't even start without being >> solidly grounded on both the ac and DC sides. >> >> From a practical perspective, if you don't tie either the ac earth ground >> or the output to ground, and isolate the chassis, I'd expect the output to >> be able to be used in either polarity. However, there are numerous unsafe >> conditions which may be created by this, expecially if the negative output >> terminal gets grounded. >> On Dec 8, 2015 4:12 AM, "Gino Villarini" <[email protected]> wrote: >> >>> So, i was wondering if isolating a -48 dc rectifier from the rack/ground >>> would turn it into a polarity agnostic device? >>> >> >
