How do you hook up a 1 farad capacitor to your amp?
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Answer 1

You first have to determine which side of the cap is positive and which side is negative. You run a wire from the negative side to the chassis and for the positive side you run a cable from the battery to the terminal and from the terminal to the amp. so that the two positive wires join together on the positive terminal of the cap. Be careful not to mix up positive and negative on the cap because it could explode and cause damage.

Answer 2

Because the capacitor is used to filter changes in supply voltage to the amp, the capacitor should be as close to the amp as possible, and connected with heavy wiring. The capacitor also acts as a huge reservoir to supply lots of current as the amp signal hits high levels. By providing plenty of current when it is needed, distortion in the sound is minimized.

The key is lots of capacitance, as close to the amp as possible, and thick cables capable of carrying lots of current.

Answer 3

Be very careful with that thing. The current output of a capacitor is the product of capacitance, in this case 1, and the change in voltage with time. Thus, if you do something to cause a quick change in voltage with that, you will get a very large current spike, possibly hundreds or even thousands of amps.

Also note for this reason you should really pre-charge capacitors of this size. Let's say you have one-aught wire run from your battery to the cap, with a resistance of .001 ohms. (I actually have no idea what the resistance of your wire is, I just made that up for argument's sake) When you connect the discharged capacitor, you are causing an instantaneous change in voltage. (i.e dv/dt equals infinity) This means that the capacitor will appear to the circuit as a dead short. Thus, the _only_ thing limiting your current flow is the wire. Ohm's law states V equals IR. As the wire is only 0.001 ohms and the system is 12V, this means that when you connect that cap to your car battery it will ["try to"-j3h] draw 12000 amps. I don't think that's good for any part of your system.

The solution? Get a resistor and charge the cap through it. The resistor will limit the current flowing into the capacitor until it is fully charged. Then it is safe to connect as the potential between the capacitor and the battery will be 0VDC. A light bulb will work very well for this task, if you don't have any power resistors laying around. This will lengthen the life of both your battery and your capacitor. Also note that if you have a fuse between the battery and the cap, the surge current will blow the fuse without precharging. If you have a switch or relay in between the cap and the battery, a pre-charge circuit must be used as the surge current will weld the contacts closed. (I've seen it)

Answer 4

Hi -Don't mind me being over anal- tilical but fortunatly a car battery really can't put out 12,000 amps due to the limiting source impedence of the battery- You might get only a thousand amps at best !!!!(using thevian and norton theory)-

Ok this is still dangerous -ok like a lot dangerous but the internal restiance of the source -the battery its self is also a part of the equation- Dead shorting a battery is bad news- also you might consider the time constant to charge the cap !!! Tc= R times C (five usually required for full charge)

RAM



Answer 5



In each "Time constant" (T) the potential on the capacitor will increase .67 of the remaining way to the battery potential. If the limiting resister is large, this could take minutes, if small then milliseconds. You want a few seconds.

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First answer by ID203048235. Last edit by Larrytoo. Contributor trust: 5 [recommend contributor]. Question popularity: 145 [recommend question]

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