sorry i forgot to cc the list: ---------- Forwarded message ---------- From: Paul Bartell <[EMAIL PROTECTED]> Date: Mar 27, 2007 7:33 AM Subject: Re: [Soekris] POE maximum voltage? To: Dave Parker <[EMAIL PROTECTED]>
you might consider a voltage regulator to put between the battery (i dont know if they exist in 48v) and the poe injector. On 3/27/07, Dave Parker <[EMAIL PROTECTED]> wrote: > I should mention that the battery bank itself is nominally 48vDC. > > Dave Parker wrote: > > Hello > > > > I have what I'm guessing is a really easy to answer question: > > > > Is 59.2vDC an unacceptably high voltage to send through a POE injector > > to a net4526? > > > > I've salvaged a bank of lithium batteries and charger from an electric > > scooter, and while I'm suspecting that there are enough amp hours there > > to run the board for "a very long time" without charging, I'd like to > > use those amp hours for other things, so I'd like to use the charger > > while the board is in operation. The charger's logic appears to have > > voltage top out at around 59.2v, and maintenance is around 56v. The > > former scares me a bit. Will the board tolerate that? Is there > > something I should add to the circuit to protect the board while the > > charger is operating? The cat5 run from the injector to the board is in > > the 5-8' range. > > > > I've tried finding a concise answer to this question with some extensive > > googling to no avail aside from two documents that mention "absolute > > maxium voltage = 68vDC. That's not enough to make me feel secure about > > my magic smoke, hence... I ask :) > > > > Thanks in advance, > > > > Dave Parker > > > > > > _______________________________________________ > Soekris-tech mailing list > [email protected] > http://lists.soekris.com/mailman/listinfo/soekris-tech > -- "If you are savvy and smart about the choices you make in life, The sky is not the limit!" Mark Shuttleworth -- "If you are savvy and smart about the choices you make in life, The sky is not the limit!" Mark Shuttleworth _______________________________________________ Soekris-tech mailing list [email protected] http://lists.soekris.com/mailman/listinfo/soekris-tech
