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Thread: Noob question (capacitor and sub box)

  1. #11
    Newbie
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    Nov 2006
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    But the flux capacitor also ran on banana skins and bear and cans at one point. Anywho thanks for the replies guys

  2. #12
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    Nov 2006
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    Quote Originally Posted by GoHybrid View Post
    Well first of all, let's address the cap. What you'll want for a resistor is a 50-ohm 5 watt resistor. They look like this: http://www.maplin.co.uk/images/full/2179i0.jpg

    All capacitors will self discharge. The idea is to slowly charge the capacitor and connect it before it discharges to the point that you risk creating big sparks. Long story short: make sure you have the final connection to the cap and the tools ready to secure it as soon as the cap displays that it has reached battery voltage.
    About the cap. Can I use this resistor http://www.radioshack.com/product/in...entPage=search? its 10Watts instead of 5 to charge the cap? Also when you say charge it...................up to where should I charge it? When the LED on the tsunami says 11V or 12V? also how fast do I connect it to terminal? in a matter of seconds or can I take my time screwing in ring terminal? Also will I get shocked as I turn the allen wrench with battery still connected? Also does the car have to be one as I charge it?

    Here is how I plan on charging and correct me if I do this wrong.

    1. Unplug power wire from amp

    2. Put the power wire to one end of resistor and touch the other end on the + side of the cap.

    3. Watch LED as it charges and disconnect (let me know when i should disconnect)

    4. Remove resistor in between and screw terminal into + cap side and begin to use.

  3. #13
    Constant Bitrate
    Join Date
    Feb 2006
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    146
    A 10 watt resistor is fine, even better than 5.

    http://www.caraudiohelp.com/car_audi...stallation.htm

  4. #14
    Maximum Bitrate GoHybrid's Avatar
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    Do this:

    1. Have the amp + and - connected and screwed into the cap.
    2. Have the cap - screwed to the car chassis
    3. Solder some alligator clips to the ends of that resistor you found.
    4. Start your car
    5. Use a voltmeter to measure the voltage at your battery terminals.
    6. Connect one end of the resistor to your main power line and the other end to the cap + and the cap will begin to charge.
    7. When the cap voltage shows the same or slightly higher voltage than what you measured at your battery, then remove the resistor and insert the positive wire into the cap +. There should be no spark since the battery and cap are at the same voltage. Tighten down the screw.

    You will not get shocked or anything unless you accidentally bridge the two cap terminals with a tool or a watch band or something... so just take off your jewelry and be careful with the tools.
    Et ipsa scientia potestas est.

    Worklog for my 2007 Civic Si ...f*** it...
    Pictures of the Corolla (retired)here
    Need to make something? Here are a few ideas.

  5. #15
    Constant Bitrate
    Join Date
    Feb 2006
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    146
    I'd just disconnect battery +, pull the fuse out of the main power line, hook everything up the way it's going to be 'forever', put resistor in fuse holder, connect battery +, wait till cap is at 12 V, pull out resistor, put fuse back in holder. You can start your car after you put the battery cable back in if you want but I doubt a 1.2 farad cap will drain enough juice to cause any damage.

    That way you don't have to handle a fully charged cap which greatly reduces chances of errors.

  6. #16
    Newbie
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    Nov 2006
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    wouldnt I want to disconnect the - of the battery? Plus the fuse I have is the tube kind. Not the 2 prong fuse. how would I wire the resistor to that?

    ok here is what im going to do i hope i got this right:

    1. take power wire of amp and connect to resistor (while car is off and without having to disconnect battery?)

    2. place other end of resistor to + of capacitor and turn on car.

    3. Wait till it says 12V on capacitor.

    4. disconnect resistor and plug the ring terminal to + of cap (do I turn off car before I do this?)

    5. then do I turn car on again to see if everything is ok?

    Sorry if I ask alot of questions but its my first time charging a cap.

  7. #17
    Maximum Bitrate GoHybrid's Avatar
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    Denver, CO
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    allright once more:

    Just follow this exactly and you'll be fine:

    1. Disconnect the (-) ground cable from your battery. Also disconnect the power wire for your amp (the one with the tube type fuse on it)

    2. Completely connect your capacitor to your amp and mount it. This means that you should have a cable going from the amp (+) to the cap (+) and a cable going from the amp (-) to the cap (-).

    You should also have a cable from cap (-) connected to the chassis ground, and a cable from the cap (+) going off towards your battery.

    At this point the cap should be fully connected and mounted. You will not need to touch it again.

    3. Read step 1 and 2 again and confirm that everything is done correctly.

    4. Reconnect your battery (-) ground cable.

    5. Exercising care with your wires so as not to cause a short, clamp the resistor to your battery (+) and attach the other end of the resistor to the amp (+) power cable (with the fuse in place!)

    6. when the capacitor reads the same voltage as your battery, connect the amp (+) power cable to the battery (+) and pull out the resistor. You're now done.
    Et ipsa scientia potestas est.

    Worklog for my 2007 Civic Si ...f*** it...
    Pictures of the Corolla (retired)here
    Need to make something? Here are a few ideas.

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