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“Capacitors will help my lights stop dimming”

Alright to address this lets look at why they dim.В  When your system is playing your amplifier is using amperage to make wattage.В  You can figure out how much amperage is being use by using this formula.

http://www.the12volt.com/ohm/ohmslaw.asp

I(amperage) = P(wattage) / (.75 * E(voltage))

so say your amplifier makes 1000 watts of RMS power @ 14.4 then the amplifier roughly should be drawing 93 amps of current.В  now say that you have a stock 1992 Nissan 240sx w/ the stock 80 Amp alternator in it.В  You will be drawing more power from the car than the alternator will make.В 

The amplifier will try to pull as close to the 93 amps of current needed to make the 1000 watts of power.В  as Amperage available drops voltage drops as well.В  Amperage and Voltage are correlated together.В  The voltage drop is what causes your headlights to dim.

Now a capacitor, or stiffening cap, will try to keep voltage stable.В  As voltage drops it releases power to bring it back up.В  But as stated above the voltage dropped because of amperage drop and a capacitor can not restore amperage.

The true fix to this problem is to get an alternator to make sure that your amperage does not drop below the required amount.В  Also when you are purchasing an upgraded alternator also understand that the car normally requires 50-75% of the amperage that the stock alternator makes.

So if your amp draws 93 amps of current and you start out with 80 amps then you should try to get at least a 175 amp alternator.

Do not think that a capacitor will fix your lights dimming.. a capacitor can not replace lost amperage.. only a alternator can..

В 

“This 1 farad cap will make my amplifier hit harder”

While this is partly true there is a big flaw in how most look at it.

P(wattage)=E(voltage) * I(amperage)

so of course if your voltage...

Hey Guys,
I'd like to install a one wire Delco alternator on my Oliver 66 tractor, which is currently operating with positive gouund. Can I just reverse the cables to negative ground and change the other wires accordingly. This is a 12 volt system.

all can tell you about is the alternator

take the term. that is closest to the batt. term. on the alt. and jump it over to the batt. term the other term is not needed in this app. trust me i do on all my fords when an alt. ges out

fordman022480 | Aug 02, 2007
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