search for: 120vac

Well here's a suggestion - a little crazy - but works... Most equipment is taking the 120vac and converting it into DC voltage. So why not just feed it DC voltage directly??? We had a situation where our field techs needed to test dsl circuits and voip ata from the demarcation point outside a house or business. A UPS might have worked - but the down conversion of 12v dc battery in ups up t...

Hello people, I am having difficulties figuring out the POE power draw in watts from a Polycom IP601. I want to know how many IP601's can be powered from the Cisco Catalyst 3560G-48PS. The IP601 wallwart has: Input 120VAC 60hz 19W, Output 24VDC 500mA. I assume the output is appropriate value to figure out how many phones can be powered. The Cisco 3560 datasheet says "the 48-port PoE configurations can deliver the necessary power to support 24 ports at 15.4W, 48 ports at 7.7W, or any combination in between&quo...

Dear Fellow *-ers, First, you guys are fantastic. Keep fighting the good fight. Second, it sounds like comments in the code are coming, which sounds welcome by all, even those of us who couldn't code their way out of a papersack, but who need to read the source. Last, I might be traveling to Europe (from US) & want to tow along hardware & haven't done this before & was

...at one! I would hate to have servers running at 137V if they are supposed to be running on 120V. The output.voltage value of 137 reported is suspiciously near the input.transfer.high value. It has often been EQUAL to that. The good news is that the ACTUAL output volts as measured by a voltmeter is 120VAC. In addition... The device.serial and ups.serial are both all zeroes? battery.mfr.date is ?CPS? rather than a date string? battery.voltage should indeed be higher than the nominal of 24.0 if they are being charged? It appears that incorrect data structure elements as returned by the UPS are being...

Hi I have a Dell PowerEdge T310 *tower* server.. I have to buy an ups by apc... anyone could help me giving an hint ? a simple "smart ups 1000" could be enough ? thx so much!! lewis.

Hi Folks; I just bought a Polycom SoundPoint 500 off of ebay after having spent way too much time trying to get updated sip images for our cisco phones. The phone I bought didn't have an AC power adapter; Could someone please tell me the volts & amps that the dc plug that comes with the phone puts out? Thanks! Mike

https://bugs.freedesktop.org/show_bug.cgi?id=62829 Priority: medium Bug ID: 62829 Assignee: nouveau at lists.freedesktop.org Summary: On S1 suspend, attached monitor does not enter low power state, MX420 NV17 AGP 4x card QA Contact: xorg-team at lists.x.org Severity: normal Classification: Unclassified

I'm trying to set up an Asterisk system for a small office, and one thing I haven't figured out yet is how to best provide reliability. One way to go seems to be a T1 for all my incoming phone lines. What if that T1 goes down? Can I use mutiple POTS lines in conjuction with a T1, all connecting to my Asterisk server? What if my Asterisk server fails? Should I use two Asterisk servers,

Ha! I got several on and off list requests for details, so I'll give a bunch of details here and then maybe I can move this to a wiki page others can help edit. WARNING! WARNING! WARNING! Be careful! My implementation required opening up high power components, and dealing with 120VAC mains power and high currents on 12VDC. If you decide to tackle any of this yourself, you need to understand how to do this safely, size components appropriately, etc. My goal is to keep a home Internet connection available during a power outage. This doesn't happen that often, but it bugged m...

...veral on and off list requests for details, so I'll give a > bunch of details here and then maybe I can move this to a wiki page others > can help edit. > > WARNING! WARNING! WARNING! > Be careful! My implementation required opening up high power components, > and dealing with 120VAC mains power and high currents on 12VDC. If you > decide to tackle any of this yourself, you need to understand how to do > this safely, size components appropriately, etc. > > My goal is to keep a home Internet connection available during a power > outage. This doesn't happen tha...

On 5/16/24 08:59, Jim Klimov via Nut-upsuser wrote: > I agree with earlier posters, such documentation can help future > tinkerers. There is probably more than just one to hold the hand and > walk through the ordeals :) > > Perhaps a new page at https://github.com/networkupstools/nut/wiki > <https://github.com/networkupstools/nut/wiki> can be a good location... >