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

Answer 1

A FARAD IS HUGE TO BEGIN WITH connect to amp? what an amplifier, output input?: people answer this question with no idea of what is the question .Answer 1You 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 2Because 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 3Be 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 1 ought 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. (IE 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 pre charging. 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 4Hi -Don't mind me but fortunately a car battery really can't put out 12,000 amps due to the limiting source impedance 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 resistance 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)

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.

Yeah LIKE anybody can go out and buy one. 1 farad is very big to charge that thing, it will take forever if and one volt supplied from a one ohms source and 1 ohm 1 x 1 x 5 = 5 seconds. Now it is almost fully charged. Some people just don't pay attention to what they read I guess. How to connect it to the input a very Good short for a very long time at the output the same results

Answer 6

First of all I'm going to say all you have to do is make sure that you use thick oxygen free car audio wire. I did a reinstall the other day and someone had used 220v household cable to wire their amp! Who does that? that being said single -aught is going to be efficient enough for all of you 1 farad guys it's easy just make sure pos to pos and neg to neg and for goodness sake charge the thing before you use it. If you read up on this page somebody has already taken the time to explain the ohms law and how to blow up your battery so be careful.

Answer if it is a capacitor made for a car amp the have a circuit board on top so they will not instantly charge off the battery they will charge slowly till they are full on their own that's how they were designed.

Re; Answer 6. What on earth is "oxygen-free audio wire"? I have assembled a good deal of industrial electrical and electronic equipment over the years, much of it to tight quality-control specifications, and NEVER has that description appeared anywhere. And this is equipment needing better quality than in a hi-fi. Those peddling it have found a nifty way to charge over the odds for... plain, or perhaps tinned, copper wire. Yes, some copper is treated to remove any included oxygen but that is for heavy sheet and profile sections purely for welding, to prevent brittle welds: its electrical properties are not affected. It matters in some parts of an audio circuit that the leads are screened against interference, and the wire should be bright or tinned in connections because surface oxide will degrade the connection and may even introduce odd partial-rectification problems, but the notion that it has to be some magical "oxygen-free audio wire" is a myth and a con.

Careful not to exceed the Caps voltage rating. 1 farad caps typically are a low voltage device.

Answer 2

Large capacitors are used in car stereos, in the power supply leads.
This is done to stop fluctuations in the voltage supply.
The current drawn from the cars electrical system varies with volume (and thumping bass)
The massive current drawn can cause a voltage drop and affect the fidelity of the music.
A large capacitor can fill in the blanks, acting like a reservoir and keeping the voltage constant.
They are fitted across the power supply as close to the amplifier as possible. They are polarised, so check the wiring diagram that comes with the capacitor, to get it the right way around.