Various people use batteries as power sources for headphone amplifiers for example.
Their advantage is the low noise over regulated power sources.
Has anyone tries to used supercapacitors for the same purpose ?
At first sight, they have a lower series impedance than the batteries, so maybe they have a lower noise too (a very simplistic reasoning, I know) ?
Anyway, I'm interested to know how they compare with batteries as low noise power sources.
Their advantage is the low noise over regulated power sources.
Has anyone tries to used supercapacitors for the same purpose ?
At first sight, they have a lower series impedance than the batteries, so maybe they have a lower noise too (a very simplistic reasoning, I know) ?
Anyway, I'm interested to know how they compare with batteries as low noise power sources.
The storage capacity of a "super" capacitor is far lower than that of a battery. Consider that Energy = 1/2CV^2.
To produce 1 watt of power for 1 second requires 1 Joule of energy. Let us say your supply voltage is 5V, then to produce 1 watt for one second requires a capacitor of value 0.08 Farad. A 1 Farad capacitor would provide you with about 12.5 seconds of music pleasure.
To produce 1 watt of power for 1 second requires 1 Joule of energy. Let us say your supply voltage is 5V, then to produce 1 watt for one second requires a capacitor of value 0.08 Farad. A 1 Farad capacitor would provide you with about 12.5 seconds of music pleasure.
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