12v UPS

With most UPS's there is electronic circuitry to reduce the home voltage to 12 or 24v to store in the battery, and then another circuit to raise the voltage back to the home voltage.  I know there is always a loss when attributes of electricity are changed. This seems very wasteful to me. I want to build a UPS for my notebook computer, that I use as a home server.  The power adapter for the notebook creates 19 volts but the notebook itself uses 12 - the other 7 is perhaps used to charge the battery while the computer is on.  I would like to put together a UPS made of 12 volt Ni or LiFe packs - would most likely be 13 volts but I don't think that would be a problem to avoid the double switching of the power.  Can anyone point me in the right direction?

Posted by haopengyou 4 years ago


Build a UPS

I am wanting to build an Uninterrupted power supply. I was planning to use relays to connect and disconnect and the mains and battery power. N/O for the mains and N/C for the DC voltage. I wasn't sure if the relays would switch fast enough for the CPU to remain on. I loaded 2 pictures. Has anybody ever built something like this? 

Posted by WWC 6 years ago


UPS

My UPS is designed to run on 36v Dc input. Can i be able to use a single 12v battery for it to run? if not is there a way i can adjust the input power to 12V?

Posted by Patricemutua 10 months ago


MASH-UPS?

Does anyone else seem to think that a lot of the entries here are not technically mash-ups. I entered one that, the more I think about, isn't really a mash-up. Sure I combined a couple of things to make something new, but unless you consider turning two decorative things into a third decorative thing a "mash-up", I'm not entirely sure it fits this contest. I'm working on something that I think will be more appropriate, but I'm curious what everyone else thinks.

Posted by aintMichael 11 years ago


UPS battery backup as car inverter?

I hope this isn't a dumb question, but if I were to take an old UPS unit, remove the battery, wire a 12V lighter socket plug to the battery cables in the UPS, and plug it in to the car, would it convert the 12V DC to 120V AC while the car is running? And if it worked would it draw too much power or damage anything? I wouldn't use this to run anything with a motor, just a laptop charger and maybe a light. Thanks! :)

Posted by 500FPS 1 year ago


UPS Battery

Hi Guys, My first time to post a question here. I had purchase a UPS from a store. The UPS have 2 6 volts battery inside of it, the seller said that 1 of those battery isn't working anymore. My question is this, how do I replace or is it possible to replace it with 1 12 volts battery instead of having 2 6 volts battery to fit there. What will be the layout of the wirings if I have to do it on 1 12 volts battery. I tried making search of the actual item on the net but couldn't find it. Here's the pictures and the information of the UPS Information -------------------------------------------- 2009000002391 MODEL: ELITE 500 VOLTAGE: 220V / 60Hz MADE IN TAIWAN --------------------------------------------

Posted by acl_20032003 7 years ago


DC to DC UPS (Help!)

Hi i am trying to build a sort of DC TO DC ups for my modem/router, please look at the image attached for my project plan. I was able to find many charging circuits online but i cant understand what value relay and capacitor should be used. can any one help me with this project. Thanks in advance. http://i52.tinypic.com/v2v38n.jpg

Posted by spooge 7 years ago


Computer UPS backup transformer into an welder OR spot welder ??????

I have some transformer from my UPS. i want to make it welder.. watch this videos.. Do not talk about microwave ovens transformers . i don't have microwave transformer. can we make it ??? 

Posted by ishan udyoga 4 years ago


Request: An Internal UPS or battery for a PC

My town has been experiencing power dips and short outages. i bought a cheap ups but it doesn't really do the job (the PC still cuts out) but i noticed that my laptop carries on just fine (obviously because it has an internal battery) so that got me wondering. Inside the pc it's just 12v and 5v isn't it? surely you could set up a battery inside the case that works just like the one in a laptop. anyone fancy giving it a go?

Posted by the.dwarfer 10 years ago


New generator

I am thinking about buying a small generator for in around the house uses ( like charging things as power tools, phones, laptops)  Because I live in a house with no power and running water.  I have done some searching and found this one( Eurom GE720 benzine generator 63cc aggregaat 720 W) to be the easiest to obtain, fast shipping, cheap and it would do the trick. Now I wonder if I would need some sort of power stabilizer or UPS to prevent power peeks from destroying my precious devices. I am new to this stuff... always had the luxury of plugs in the wall so not sure what I need and where to buy it and more importantly, how do I use a stabilizer or UPS correctly Eurom GE720 benzine generator 63cc 720 W

Posted by MrLeggs 4 years ago


Home Electronic Project, Can Use Some Help :)

Hey all I'm trying to hack together a few things to make a uninterrupted power supply unit. So far, I've got a 500W power inverter from 12V to 240V, and a car battery. Unfortunately, I also need a power supply capable of pumping enough amps into the inverter and battery to get the whole thing started. I've tried an old ATX power supply I had lying around (actually several :s and I figured if I can get at least a few amps out of it it'll power ONE computer at least) but as soon as the inverter is connected to the 12V line the power supply shuts down (even when it's not powering anything at all, just the inverter ATM). It's like some sort of safety mechanism, same thing happens if you short two wires across. I know there's nothing wrong with the inverter because I can plug it into a normal wall transformer (which fried as soon as I plugged something into it because the transformer only output 1A ), and it works fine powering a computer on the battery. Anyone know of a way of overriding this mechanism, or even better, a way of hacking together a cheap and nasty 240V -> 12V 50A power transformer? Maybe splicing two power supplies together, if it's possible? 'Shady

Posted by PacShady 10 years ago


UPS Uninterrupted Power Supply

Just an open forum about UPS, the pro's/con's.... What do you use yours for? Lately Ive been thinking about getting one, then ask myself "Why?" I don't know, but still think it could be useful. Sooo, do you use it for a certain purpose? Do you buy it, just to strip it for parts? Or maybe IBLE idea's on uses for an UPS!

Posted by killarowa 10 years ago


Old UPS transformers: Any uses?

Does anyone know of a use for those massive transformers found in dead UPS's? Please don't post replies that include "door stop" or "recycle them" because those are obvious replies when you have no answer to my question. *SMILE* I have not tried but if the "secondary" for those that is the 110v output to the plugs were hooked to 110, do the original primaries become low voltage ac secondaries? (~12v) I have accumulated about 6 of these and would like to find an electronic use for them before resorting to recycle.  I have no doors that need propped open. Thanks.

Posted by stuffdone 2 years ago


Contest Prizes being Pro Accounts for runner-ups?

It would be great if you added runner-up prizes in some or all the contests of Pro Instructable Accounts. I am new and have not seen that, maybe you already have them sometimes, if so then please ignore this. But if not, it would be really great for those of us (me) that want one yet can't afford to spend the money on one. I know it isn't much to some of you folks, but it is a lot to others. The cost of the supplies of things we are going to make, which we will spend first anyway, it is already hard to afford. Adding the Pro account as a prize wouldn't cost Instructables much if anything and there is no shipping cost plus I think it would be appreciated by many.   :}. Thanks, Conny

Posted by love4pds 7 years ago


Instructables unusable on an iPad unless logged in.

Instructables is unusable on the iPad due to advertisement redirects constantly taking you to a new page. Horrible “Congratulations!!!! You won an Amazon or Walmart Gift Card! Pop ups and redirects. Please fix! This happens in Chrome or Safari in multiple IOS versions. This has been happening for several weeks now.

Posted by Frankincell 10 months ago


Top 10 Lightsaber Mash Ups

"The Star Wars kid has gotten a lot of shite over the years, mainly because he's not a professional. He simply didn't have the training necessary to pull off that fight sequence. On the other hand, there are lots of professionals who do have the training and simply lack the means to wield it. I'm talking about people like Aragorn, Captain Jack Sparrow, and Westley. If somehow you could only put a lightsaber in these fearsome warriors hands...Ugh, blogging. What am I even talking about? Let's just be ourselves, you guys. I found a bunch of clips on YouTube where people took fight sequences from other movies and overlaid lightsabers on top of them using magic, and they are hilarious, and you're gonna love it."Link

Posted by Tetranitrate 10 years ago


You may take our tools, but you'll never take our Freedom!

On January 20th there will the first meeting of T-Exchange, a Moray-based (Scotland) hack-group.  Anyone interested in making stuff or being creative is welcome.  You can find us on Facebook (search for T-Exchange) or at http://www.t-exchange.net for more information! Its a long shot but somebody might see this :)

Posted by termcc 6 years ago


use an UPS as Voltage Stabilizer

I wonder how effective are UPS at providing Voltage regulation (without switching to battery). Most of them claim to have AVR inbuilt. Would they negate the need of a separate stabilizer or not?

Posted by bhvm 5 years ago


Simple, yet annoying mistake made by game developers

I have found a simple yet annoying mistake that game developers seem to love to make. Before I go on, lets get this straight: Parkour is a method of movement focused on moving around obstacles with speed and efficiency. Originally developed in France, the main purpose of the discipline is to teach participants how to move through their environment by vaulting, rolling, running, climbing and jumping Free running or freerunning is a form of urban acrobatics in which participants, known as free runners, use the city and rural landscape to perform movements through its structures. It incorporates efficient movements from parkour, and adds aesthetic vaults and other acrobatics, such as tricking and street stunts, creating an athletic and aesthetically pleasing way of moving Okay, so the main difference is that free running is pretty much parkour, except it involves flipping, tricking, and is just all around more free; hence FREE running.  But here's the thing I made this forum topic about. In the  Assassin's Creed series, you climb up buildings, jump from one to another, and that's pretty much it. Scaling, jumping, rolling, and that's all there is to it. Yet they call it free running. You don't flip or trick or anything, therefore isn't it parkour and not free running? Another game where this mistake is made is in Tony Hawk's American Wasteland--but there's one difference. In THAW, you do front flips, back flips, wall flips, you climb buildings, scale buildings, etc. So it should be called free running, right? Well tell that to the guys over at  Neversoft, because they call it parkour. Why? What is it about these developers that make them blindly call something one thing, when it's actually another? Do they even think of looking at sources? Have YOU seen this mistake in OTHER video games? Tell me your opinions on this!

Posted by Flumpkins 7 years ago


Whats up

Hey chris whats up?

Posted by XI3 10 years ago


whats up

Whats up every one

Posted by apple is cool still 7 years ago


Wake Up!

<br> Just a quick video I threw together today.

Posted by JamesRPatrick 7 years ago


HDPE or UPE beehive

I want to make a beehive but not wood, not sure should i go for HDPE or UPE, any suggestion? which is cheaper?

Posted by AngusL1 2 years ago


question not showing up?

I asked a question in Answers on (i think)thursday, and it never showed up on the front page of answers. also, when i search for it it doesnt come up. if you go to my profile it shows up there though. the link to it is here.

Posted by revelae 9 years ago


Own up!

Who's in the costume?

Posted by Kiteman 11 years ago


Forum topic not turning up...

My new form topic, isn't showing up on forums...

Posted by KentsOkay 10 years ago


500 error on Set up a slackline in Email

The 'Set Up a Slackline' instructable was in the email, but has a 500 error. www.instructables.com/id/Set-Up-a-Slackline/

Posted by truk 8 years ago


Heads up Speedometer

I want a heads up speedometer for my 2000 Toyota Echo. I'm not sufficiently skilled to design one yet. Anybody wanna jumpstart this?

Posted by augur45 10 years ago


published instructable not showing up

Greetings- I published an instructable DIY Pool Cover two days ago but it's still not showing up on the site.  Any idea what's up?

Posted by cobinrox 5 years ago


My Instructable isn't showing up!

Well, I just posted an Instructable on how to woodburn the Instructables Robot and stuff, but it's not showing up, and some other Instructables are showing up for recent, does anybody know what's wrong?

Posted by GorillazMiko 10 years ago


signed up as pro, no access to pdfs

I have signed up to get pro access just for the pdfs and I cannot get them. What's up?

Posted by velkyn 9 years ago


New users can not sign up

The following message appears when my wife tries to sign up: ERROR 404: unknown action: /gopronow Whoops!

Posted by drj113 9 years ago


Instructable has not shown up in Contest

Hi,My most recent instructable does not show up on the contest page but does have the contest header. Whats up?Thanks

Posted by joejoerowley 10 years ago


Stuff won't show up in "tech"

Whenever I post something to the category "tech" in the community section, my topic doesn't show up! It shows up in other places, though.

Posted by mdj817 10 years ago


1 mess up

Umm well its set up so you do not have to be Canadian to join this group, mistake.

Posted by Bartboy 10 years ago



Related boxes show up on the left side.

The related and ratings boxes show up on the left side ONLY on Instructables when I'm logged in. (by instructables I mean write ups)

Posted by Clayton H. 8 years ago


Comments are screwed up.

Some of the comments viewed are really screwed up. Am i doing somthing wrong? I'm using firefox.

Posted by muhahaha 8 years ago


mini pictures not poping up

Pictures are not working.

Posted by 864 8 years ago


Halloween contest 2008 my items not showing up

I signed up for the DYI Halloween contest through Etsy and flickr way back and my stuff is not showing up. What's the deal?

Posted by simplysavy 10 years ago


heads up

 heads up just got a new camera  instructions for full auto gun should be up in 3 weeks or more maybe less btw thanks innovanna,knexinventer,and The Red Book of Westmarch for subing me

Posted by knex monster 6 years ago


Wallet Challenge Results are up!

Results are up!Check to see how your favorites did, and if you won check your private messages.

Posted by canida 11 years ago


keep signing up for instructables newsletter but don't recieve it

Keep signing up for instructables newsletter but don't recieve it

Posted by bluscreamofdeath 9 years ago


Can you speed up the video?

Can i speed up part of the video (eg, something cooking) because the thing i want to do takes 30 seconds to microwave?? please let me know :)

Posted by DELETED_JoshM96 9 years ago


my instructable only shows up on my page

I was wondering how to make my instructable show up when i search for it . all it shows up on is my home page please help me !!!!

Posted by robert 11 years ago


K'nex Wind-Up Clock

I will give a patch and much thanks to anyone who can make an wind-up alarm clock out of K'nex and an instructable. Here is a link:http://www.youtube.com/watch?v=zRYb9kRZ35s

Posted by DELETED_DELETED_DELETED_16nato 7 years ago


Sign up pro help not working

When i enter my credit card info to sign up for Pro Version, it just brings me to a blank page when i hit submit?

Posted by Vulcano777 8 years ago


wind-up radio for bike?

Has anybody thought of the idea of using those freeplay wind-up radios to use as a dynamo for a bike? So you can power up your lights, charge your ipod or even more.

Posted by markldn 9 years ago



Science Fair result are up!

Here are the results!

Posted by ewilhelm 11 years ago