With solid-state DC/DC converters, so can increase the voltage (that's how PoE generates 48VDC on a 12V power supply). The main issue is current.
-Philip John Novack wrote: > All of their power comes off the PCI bus, which is fairly limited > FXS circuits in PCI cards require additional 12VDC not available on > the bus, and supplied from, in many machines, the Hard Drive power > connector > > John Novack > > > Philip A. Prindeville wrote: >> FXS is exceptional because you're generating power and ringer voltage to >> the remote end. >> >> FXO and BRI/PRI are much less power hungry. >> >> -Philip >> >> Josh Mahonin wrote: >> >>> Hi Tom, >>> >>> I couldn't find any stats after a quick Google, but I don't think a PRI >>> would be too much more power hungry than say, a network adapter. The >>> FXS/FXO cards are the real pigs, Digium even makes a PCI-mounted >>> external power unit for them >>> (http://www.digium.com/en/products/analog/analogpwr.php). >>> >>> I've only ever used a net5501 with one PCI card, and the general rule we >>> go by is 12V @ 1.2A - 1.5A just to be sure. If you're just using the >>> 1.0A power supply, especially with a PRI and FXS/FXO line card, you >>> might run into trouble. >>> >>> Good luck, >>> >>> Josh >>> >>> Tom Chadwin wrote: >>> >>> >>>> Hello >>>> >>>> I am looking to build a net5501-based Astlinux install with a >>>> Junghanns miniPCI PRI card >>>> (http://www.junghanns.net/en/singleE1mini_produkt.html). With previous >>>> net5501 builds, I've bought the ordinary Soekris PSU. Is a PRI card >>>> power-hungry, and hence will I need to buy the more powerful PSU? Or >>>> will the standard one do the job? The box will also have an analogue >>>> card installed with 3xFXO and 1xFSO. >>>> >>>> Thanks >>>> >>>> Tom >>>> >>>> ------------------------------------------------------------------------------ _______________________________________________ Astlinux-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to [email protected].
