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Thread: Electrical questions

  1. #9
    SirKristoff is a poopiehead Ozzy's Avatar
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    Well direct current (DC) is like you said steady current. Alternating current (AC) is just what it says alternating. THe voltage goes up and down in hertz. In the US we use 60 hertz. That means every second the voltage goes up and down 60 times.
    That's the simplest I can make it. I hope I didn't confuse anybody.
    If you have any more questions let me know.

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    By the way, I could probably find an old 80mm fan or 2 too send ya to replace the one your fried if you like. For a power supply, I would ask friends and familys. Someone has to have an old crappy computer that hasn't been used in years laying around. Not the best thing in the world to use, you probably want at least a 350W psu, but it should work.


    Casper

  3. #11

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    Thanks for the offer casper, but the thing is that the fan still works fine, always has, and yes it is a CPU fan. Also, are you sure that the pelt is totally gone? I spent like $25 including shipping on it, and I also already bought the plug things for both heatsinks (which still haven't gotten here) and both pelts... Now I am really mad/sad with myself for not knowing more about elecrical appliances... [img]http://www.**********.com/iB_html/non-cgi/emoticons/sad.gif[/img] [img]http://www.**********.com/iB_html/non-cgi/emoticons/mad.gif[/img] [img]http://www.**********.com/iB_html/non-cgi/emoticons/confused.gif[/img] [img]http://www.**********.com/iB_html/non-cgi/emoticons/wink.gif[/img] Thanks for the help!! [img]http://www.**********.com/iB_html/non-cgi/emoticons/biggrin.gif[/img] [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img] [img]http://www.**********.com/iB_html/non-cgi/emoticons/alien.gif[/img]

    P.S. Besides taking apart a computer, could I get one of those power supplies at Radio Shack or something?
    I am back..

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    Yes, Rat shack stocks power supplys, you could probably get one cheaper online though through newegg.com.

    As for the pelts, I really couldn't tell you if they are dead or not for sure. Only thing I can tell you is to hook em up to a PSU and find out.

    When you get your PSU post here and I will tell you how to jerry rig it. (Modern power supplys are meant to work with computers, thats why you can turn it off with windows. Back in the day you actually had to manually turn off your computer. So... in essence a power supply isn't supposed to work unless there is a computer hooked to it. But there is a very simple work around for this.)


    P.S. buy wire nuts


    Casper

  5. #13

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    If you can find an old AT power supply (the new ones are ATX) then it will be easier to rig for use with your peltier. There are probably a lot of them kicking around, too, if you go to a computer graveyard...

    Ditto on that "lucky you didn't do worse damage" thing...

    The other important difference between AC and DC that wasn't mentioned (or i missed it) is that typically DC (direct current) devices use small voltages like 12V (thats what your pelt wants) or 5V, while AC devices run on 110V. That's a big difference, and a dangerous one!
    There's no 'a' in perlite.

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  6. #14

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    I considered telling him to find an AT power supply, but I really didn't want to confuse him, as you can't buy AT psu's in very many places anymore. The workaround is actually quite simple. You just have to cut 2 wires to the ATX power supply (the big plug that connects to the motherboard for the people that don't know) and splice em together.

    By all means though, if you can find one in an old crappy computer then you could save yourself a few dollars.


    Enlight ATX 300W P4 Power Supply EN-8304946A - Retail
    Specifications:
    Intel Certified and AMD recommended
    Weight 4 Lbs
    Dimensions: 6"W x 3.5" H 5.5" D
    MTBF life expectancy : 100,000 hours (11 years & 2 months)
    Operating temperature range : 10 to 50 degree C (50 to 122 degree F)
    Automatic Fan Speed Control (AFC)
    Single sleeve bearing fan

    $24.00 at www.newegg.com


    If you plan to run 2 pelts on a single psu, you really need to get AT LEAST a 300w psu. Personally, I wouldn't get under a 350, but a 300 should work.



    Casper

  7. #15

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    Ok, thanks!! This is starting to get a little confusing... Also, I don't know if thishelps it, but I unplugged the second I heard the pop, so it just got like half a second of power. Do you think that that could also run the two heatsink fans? Thanks again!! [img]http://www.**********.com/iB_html/non-cgi/emoticons/biggrin.gif[/img] [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img] [img]http://www.**********.com/iB_html/non-cgi/emoticons/alien.gif[/img]
    I am back..

  8. #16

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    Yes, it will run the fans like a champ. If you still have the molex conectors for the fan they would help, but I guess you could hardwire it if you had too.

    Breakdown

    AT= old computer standard. Basically its the motherboard layout, they standardized the components for the most part (ie size, and ports) basically so you could use it in any "AT" case etc... (really short version)

    ATX= the current standard.


    The dif. in the power supply is with a newer ATX psu you will have to fool it into thinking it is connected to a motherboard.

    An older AT psu you would not have to fool.

    BTW: If you decide to order from newegg, do some shopping on there site. The one I listed was the first thing i saw, you may be able to save some coin. They have sold cases with 250W psu's in em for under 20 bucks before.


    Casper

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