Thread: Cap questions
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Old 04-30-2003, 11:22 PM   #5
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First off, Caps when Wired in parallel, The capacitace of each cap. is addative and the Voltage rating is only as high as the lowest voltage rating of the two or more caps.

Now wired in series the the Caps Farad ratings are 1/(1/C1+1/C2+1/C3+......) In other words you take the capacitor 1 and Inverse the value, that is the 1/X button on a calculator. Then you do the same for Capacitor 2 then add those valuse together, then the inverse of that. Which will equate to a lower capacitance, yet the working voltage of the caps will be addative.

So let say you have two 0.5 Farad caps with one having a DC working Voltage of 20V. The other has a DCWV of 16V

I Parallel, that would equal a 1 Farad Cap, yet you would only have a DCWV of 16V.

Now with these connected in Series that would make it equivlent to 0.25 Farad cap, yet it would have a working voltage of 36V.

Now on to the other part, Don't get the cap. First I would suggest looking at the wire for your battery grounds, and the power wire that runs from your alternator to your battery.

While commonly overlooked, The Alternator to battery wire most people will forget when up-grading to a higher power handling system. While you add bigger power wires for amplifiers, the wire gauge in the front end of the electrical system doesn't get changed. Why? It should especially if you have increased the currnt load on the alternator.

Second People use big wire going to the fram of the car, well the car chassis is not the end of the road for the current flow. remember when you added that big fat power wire to the amp in the trunk or hatch, you really should look at the return path to the battery. How come some forget to replace that old factory ground, or add anothe Ground wire to the battery? Not sure but It commonly gets over looked. Remember if you are drawing 50A from the battery, that same 50A sould be returning to the batts negative post.

So I would say first I would see if that may help. Remeber though if you are drawing signifigantly more current than your Alternator can handle. Bigger wires, Caps, or what not is not gonna help dimming.
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