I have a PC with a power supply that works for both US 110Vs and 220V. The current rating is 2A/4A and frequency 50/60Hz. I want to hook up a bank of lead acid batteries to power my PC. In between them I require an inverter. What specifications of the inverter and batteries will I need to achieve this successfully ?
135420
Any inverter designed to run from a car battery which gives the current output you require should work. Connect the batteries in parallel for longer usage time. If you can get hold of a socket and battery connector from auto-parts supplier it would make connecting a single battery easy. Or did you mean you want to run your PC from your car anyway?
449877
if your dealing with simple power supplies that supply DC electronics is pretty simply to get them to run on 50Hz. the first pic is a 60Hz supply....\nhttp://aycu34.webshots.com/image/5353/2000360261420977563_rs.jpg\nall you need to do is add some more capacitance to prevent the ripple voltage from dropping...\nhttp://aycu26.webshots.com/image/4785/2000376600521609993_rs.jpg\n\nbut from the sounds of it, you are dealing with AC electronics. Im sorry I do not have an answer for that.
168442
hi there\n\nevery adapter supplied with laptop has some range for controlling fluctuating volatage and its written on the adapter it self. but when the range is too much upside down it slowly start burning the battery element copper or aluminum wire and it is screwed up when it is burnt completely. in some countries like india people where this is a major problem they use ups (uninterripuble power supply).ithink u can buy good ups from APC and it will take care ofuar laptop
51201
A power supply needs a "load" to run,,I.E.  all that stuff in the computer box.  Some have internal fuses that will blow and you have to open the supply box to check,,There is a 110/220 switch that may have been moved,, I have never had one that I had to mess with jumpers,,  yes, a factory defect is possible,, cold solder joints on large components are quite common coming out of the factory..
363749
You will need a plug adapter and a power converter otherwise you will damage you power pack and laptop.\n\nOr the easier option is to buy a new power pack in Australia or buy one that works in Australia before you go (the compatible ones are cheaper than originals).\n\nNot only are the plugs different, but the main's current is also different.\n\nIn the US, the current running in the mains is approx 100-127v/60hz.\nIn Australia, the current running in the mains is approx 220-240v/50hz.\n\nPlease see here: http://en.wikipedia.org/wiki/Image:Map_of_the_world_coloured_by_voltage_and_frequency.png\nhttp://en.wikipedia.org/wiki/Domestic_AC_power_plugs_and_sockets
205475
If it's for a simple hobbyist application they need to know only the resistance value and its power rating.\n\nA full specification would also include:\n\ntolerance,  thermal coefficient,  maximum voltage.
434894
You can use an integrated circuit, like LTC6906 from Linear Technology which goes up to 1MHz at 2.25 - 5VDC supply,\nsee:  http://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1010,C1096,P9790,D6998\nAlternative: MAX5094A by Maxim,  see:  http://www.maxim-ic.com/quick_view2.cfm/qv_pk/5017\nI didn't have the time to check the output power, but if it's not enough, a simple emitter stage transistor will do.
672407
You could solder onto the positive and negative parts of the battery case 2 wires with a female AC adaptor plug.  Problem is that i have no idea what mA, voltage, wattage, ohms, etc to use there.  Check the battery and look for the electrical information, or check the manufacturer's page for some schematics.  About 3 years ago i ran an old computer that way after the battery died since i didnt feel like roaming the globe for a battery that fit.\n\nYour safest bet is the battery and if it died, replacements are EASY to find on the internet nowadays.
424586
Switched Mode Power Supply. Unlike the old power supplies of the past, which used large, heavy transformers, SMPS's use transistors switching DC power on and off at very high rates (typically 40 to 80 thousand times per second) into the primary of a much smaller, more efficient transformer. SMPS, in addition to being lighter and more efficient, afford better regulation of voltages. They're a bit harder to work on, but the benefits far outweigh that little inconvenience. FYI, they can also be called DC-DC converters since in a conventional setup, the house current is converted to DC by a rectifier before it goes into the SMPS. Nearly all consumer electronics products are using SMPS nowadays.
170079
If its a 12v power supply you need then i think Radio shack should have a suiteable replacement  and they have power supplies with changeable polarity. Ebay has them but a lot of looking to find one .
211417
You'll need, as the name may suggest, a voltmeter.  Also applicable is a multimeter - which you'd then set to voltmeter mode.\n\nAt which point you'd just put one contact on one one end of the battery, and one on the other, and see what the equipment reads.\n\nMy money's on 1.5V :)
31372
NO! You need special equipment to make any hook up to the electrical system. Solar panels are direct current or DC and your electrical service is alternating current or AC. You would need inverters and phase matching equipment to make those kinds of connections.\n\nFor a Photovoltaics system to work properly you will need batteries for storage, wiring to handle the system amperage , inverters, phase converters, and fairly large arrays of solar panels to make the system worth while.
106580
If you had power issues then lagging would be the least of your problems. A switching power supply will shut down if overloaded. If you are concerned that your PC may be getting close to pushing the limits of the power supply, You can check the the amperage either on the AC or DC side with a clamp-on amp meter to determine the load the PC is drawing.
508455
An inverter is a circuit for converting direct current (DC) to alternating current (AC). Inverters are used in a wide range of applications, from small switched power supplies for a computer to large electric utility applications to transport bulk power.\n\n--> http://en.wikipedia.org/wiki/Inverter_%28electrical%29\n\nAn uninterruptible power supply (UPS), uninterruptible power source or sometimes called a battery backup is a device which maintains a continuous supply of electric power to connected equipment by supplying power from a separate source when utility power is not available.\n\n--> http://en.wikipedia.org/wiki/Uninterruptible_power_supply
213901
I prefer you buying one.  But there are always schematics out there that show you how to create your own inverters.  \n\nhttp://www.aaroncake.net/circuits/inverter.htm
621136
The above answers about using a voltage regulator sound ok.  Just make sure to check out the regulator's data sheet so that it can safely regulate what DC voltage you are giving it (though with this 12V case you shouldn't have a problem).\n\nAlso, when a battery is rated at 12V, 30A the battery doesn't necessarily output 30A at all times; that is just a full load rating given for safety reasons (don't want to overload the battery).  The battery is a constant voltage source so you can certainly have a load that pulls much less than 30A.\n\nWidth of wire?  You shouldn't be too concerned with this at these low voltages.  Just use breadboard type wire (around 22 AWG I believe).\n\nAlso, one final comment from me... why use a car battery when you can use a more convenient source of DC voltage?  If you want something that can conveniently power your IC's try one of those nifty AC/DC plugs that charge cell phones and the like.  They are rated in various output voltages and can surely supply all the current your IC's will need.  Just cut off the DC plug end and strip the wire.  Boom, now you have DC voltage for your breadboard supply terminals or whatever.
230651
In order to get 12V, you would need 8 AAA's in series (1.5V per).  Now, how many of those series combinations of batteries needs to be attached in parallel to safely provide the 500A?\n\n-AAA's have a rating of about 1000 mA-hrs = 1 A-hr (see Wikipedia source).\n\n-CCAs is defined as the battery's current draw for 30secs and not fall below a certain voltage (Battery FAQ).\n\nThe bare minimum number of parallel branches would be something like this: (A-hr ratings add in parallel)\n\n(500A)x(30sec/3600)= branches x 1 A-hr\nbranches = 4.17 => 5\n\nBut that would almost drain your battery pack within only 30 seconds, subject each branch to 100A (500amp/5), and probably force the voltage below 12V at some point.  I'm not sure what the safe current rating of AAA batteries is, but likely a little bit below 100A, haha.\n\nI would say well above 5 parallel branches to be re-usable/safe.  Maybe 500 branches would be safe and usable (though impractical).  Then you only have 1A through each branch and could start the engine about 120 times (30secs per start => 3600sec => 1hr).\n\nbatteries = 500 branches x 8 per branch = 4000... yikes