by GlassWolf » Sun Apr 17, 2005 5:33 am
the supercaps have a very high ESR which makes them useless for these applications.
a smaller electrolytic like the 1-3Fd ones have much lower ESR when made properly, which means they'll respond much more quickly.
They can help transient response to the amp IF the electrical system can already handle the current draw, in my opinion.
In other words if your alternator is already big enough, and your voltage rails don't sag, the capacitor(s) will supply current to the amplifiers' power supplies microseconds faster than it would take for the alternator to respond in a similar manner, as the capacitors have a low ESR and are physically close to the amplifiers.
Mind you, this doesn't contradict RC. He's still right that, as I've been saying here for some time, that capacitors aren't a replacement for an adequate charging system, and they won't make up for the need for a larger alternator.
the supercaps have a very high ESR which makes them useless for these applications.
a smaller electrolytic like the 1-3Fd ones have much lower ESR when made properly, which means they'll respond much more quickly.
They can help transient response to the amp IF the electrical system can already handle the current draw, in my opinion.
In other words if your alternator is already big enough, and your voltage rails don't sag, the capacitor(s) will supply current to the amplifiers' power supplies microseconds faster than it would take for the alternator to respond in a similar manner, as the capacitors have a low ESR and are physically close to the amplifiers.
Mind you, this doesn't contradict RC. He's still right that, as I've been saying here for some time, that capacitors aren't a replacement for an adequate charging system, and they won't make up for the need for a larger alternator.