search for: 12v

...While replacing the power supply (because that is what smoked) I decided to rebuild the microcontroller. It is complete however I cannot get the AC present and low battery to work properly. It uses a standard serial port with simple relay switching. I made a simple device to apply either +12 or -12volts to both pin 1(DCD) and pin 8 (CTS) to help me understand the correct handshake but I am very confused. Here is a table of what I get: StatePin 1Pin 9Note?What I understand it means 1+12V+12VOLOn Line -?normal operation. 2-12V+12VLB OLI don't understand this. It should be On Battery. 3+12...

...one battery. This packed battery has two very important electrical characteristics for your UPS: nominal voltage (V) and capacity (Ah). Usually you will meet 6V (3 cell) and 12 V (6 cell) batteries in UPS. This represents nominal voltage of battery. In 70% of ups devices usually is used battery of 12V/7Ah in some rare cases 12V/9Ah or 6V/4.5Ah. Depending on ups power rating in output different number of batteries is used and common values are: UPS Technology UPS rated power number of batteries total battery voltage Interactive...

Does anyone on the list have recommendations on 12VDC based hardware which runs a stock Centos 4 (or even 5)? -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Principal Consultant 10 W...

Hi recently bought a soekris net5501 and a tdm410 to place in there. I am having some issues attaching 12V power to the card via the molex card - basically the box for the motherboard is too small. I have read up about a PWR2400b and it seems to use 2wire pin, I am guessing to connect to P8 just behind the molex connector on the tdm410. can any one here confirm this, or have any info on the pwr2400b -...

....0 045 240.0 60.0 At least what I know about Megatec, It seems to say that it has a 240.0 V battery with currently 2.27V. Quite strange. I contacted Lacerda to help me interpret this values and they said that 2.27 is just 1 element from 6 inside the battery. This way: 2.27V x 6 = 13,62V This are 12V batteries 13,62V should be the real battery measure? This UPS has 20 batteries in series: 20 x 12 = 240 This is the nominal battery value returned by F command. When power is lost, the 2.27V drops very quickly to 2.06V 2.06V x 6 = 12.36V Which seems to be correct for a 12V battery. To top i...

...d 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 me when it did and I like playing with...

...y It looks something like: ----[ STDIN ]----------------------------------- electronica at tdnet 24V DC modular ATX PSU Slot 0: Base Module with PowerWhatch SerNo: 00000001 Uin: 26.8V Iin: 8.9A T: 52,6?C Slot 1: ATX 2 (144W) SerNo: 00000001 +12V: 12.2V, 2.8A +5V: 5.1V, 6.1A +3.3V: 3.3V, 11.9A +5Vsb: 5.0V, 0.1A -12V: -12V, 0.0A T: 58,1?C Slot 4: SATA 4 (82W) SerNo: 00000001 +12V: 12.1V, 0.3A +5V: 5.0V, 0.7.A +3.3V: 3.3V, 0.0.A T: 48,7?C Slot 5:...

...ls, 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 me when it did...

...; > >? ? ?I found out about NUT just days ago while searching for a > solution > >? ? ?for my home setup. After some digging through the interwebs, > I come > >? ? ?to you with questions. > > > >? ? ?I'm putting together a DIY 12V UPS, very similar to what this > guy did: > > > >? ? ?[1] > > > https://baldpenguin.blogspot.com/2015/10/diy-12v-ups-for-home-network-equipment.html <https://baldpenguin.blogspot.com/2015/10/diy-12v-ups-for-home-network-equipment.html> <https:...

I posted a thread here... http://forums.opensolaris.com/thread.jspa?threadID=596 I am trying to finish building a system and I kind of need to pick working NIC and onboard SATA chipsets (video is not a big deal - I can get a silent PCIe card for that, I already know one which works great) I need 8 onboard SATA. I would prefer Intel CPU. At least one gigabit port. That''s about it. I

Hi All, I've just started caring for a dual Opteron machine. It has a 3Ware 9500S-12 RAID controller, a Tyan S2882G3NR motherboard, 10 IBM 400GB disk drives, and a 650 watt power supply. It has been behaving itself quite nicely until recently. The poor behavior started when I upgraded the OS from CentOS 4.1 (32 bit) to Centos 4.1 (x86_64). When running in uniprocessor mode, the system

Hi, Why Aastra phones use more electricity, i.e. 48VDC whereas other phones use much less, e.g. Grandstream and Linksys both use only 5VDC. I first thought it was because of PoE, but the ones with 5VDC also run fine on PoE. What is the difference in power consumption then? -- Zeeshan A Zakaria -------------- next part -------------- An HTML attachment was scrubbed... URL:

...onnector, and Digium says their business edition folks got it to work, but only by doing nasty warranty-voiding things to the internal wiring. Has anyone figured out a solution for this? Something along the lines of an external power brick whose output attaches to a backplane slot and gives you a 12V connector inside the server? Or am I just SOL? Thanks -- j. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20070305/789e1079/attachment.htm

I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one yesterday, when the electricity went off 3 times, for a second or so on each occasion. My server, an HP MicroServer, came back (re-booted) on 2 of the 3 occasions, but not on the third. I assume that the problem arises because the machine does not close down properly. (Although it is

...using the SCD-20 solar controller from IVT Gmbh in combination with a 230Ah battery and a photovoltaic panel to power a small server based on an Intel ATOM N270 CPU. the controller is (will be) connected to the server via RS232 (1200 8n1) and works like this: - if the battery voltage drops below 12V, a warning LED is switched on - if the battery voltage drops below 10.5V, the load (the server) is powered off to prevent exhaustive battery discharge - if the battery voltage raises above 12V, the power to the server is switched back on the info record delivered via RS232 looks like this: <R:...

...of 13.62-13.64V as recommended by sealed lead acid battery manufacturers should keep it under 42V. Overcharged or worn batteries might have a highere clamping voltage, but more than 42V will move it into the regions of 48V power supplies. - Battery manufacturers recommend a minimum of 10.8V for a 12V battery as the cutoff discharge voltage (further discharge will cause battery damage) but the UPS is likely to shut off before that, so I guesstimated 11V for a 12V cell to be a reasonable "empty battery" voltage. - The float charge (clamping) voltage for a fully charged 36V battery if...

...instead of 36V in UPSC (Battery.voltage). I think that this should be corrected so the customer can see the string voltage and not the single Cell voltage (Megatec 0.06). - About battery low and high guesstimation the formula uses these values: batt.volt.low = 104 * batt.volt.nom / 120 (for a 12V VRLA --> 10.4V batt.volt.low) batt.volt.high = 130 * batt.volt.nom / 120 (for a 12V VRLA --> 13V batt.volt.high). In my opinion these values are not correct (a 12V lead acid battery can be charged up to 13.8V while discharged to 9.6V) Instead I would suggest: batt.volt.low = 100 * batt.vol...

Here's the state of my search: BatteriesPlus is... odd. The corporate site, and after a phone call, tell me they don't do GSA, but some of their franchises do. I called the local one, and they do. However, the only RBC 43 they offer, I might as well buy direct from APC, at well over $300 for the set. Battery Sharks, and Apex, don't do GSA... but they *do* offer replacements for about

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

...10 -> "3,30" # +3.3V voltage 0111 -> "15,0" # +3.3V current (17.3mV/LSB) 0112 -> "5,00" # +5V voltage 0113 -> "5,0" # +5V current (26mV/LSB) 0114 -> "12,0" # +12V voltage 0115 -> "8,0" # +12V current (62.5mV/LSB) 0116 -> "5,00" # +5V standby voltage (26mV/LSB) 0117 -> "0,3" # +5V standby current 0118 -> "-12,30" # -12V voltage (96mV/LS...