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Super capacitors and audio
Super capacitors and audio
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Old 17th April 2013, 07:54 AM   #1
rrrremus is offline rrrremus  Germany
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Join Date: Sep 2009
Location: Timisoara
Default Super capacitors and audio

Hello fellow members.
I am a long time audio diy-er and have always taken interest in low noise power supply design. I have never needed to use battery powered equipment although i have always wanted to try my hand at it. I have recently gotten into possession of a few dozen 2,7Volt 50F super capacitors from Nescap. The datasheet can be found here : NESSCAP

I have played around with one cap and they are quite powerful, the charge lasting for a few hours with 10-20mA current draw; however i cannot see a use for them in audio as they take a whole lot of current while charging and also because of the need to wire at least a few of them in series for an analog power supply.

Does diyaudio think otherwise ?
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Old 17th April 2013, 08:05 AM   #2
sofaspud is offline sofaspud  United States
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Join Date: Nov 2005
Location: San Antonio
Two in series is 5.2V and 25F. If you have some low-power application they might work. Something digital, a low-voltage op amp, or a cellphone-type class-D chip amp. Use a current-limiting resistor to handle the recharge.
It is error only, and not truth, that shrinks from enquiry. - Thomas Paine
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Old 18th April 2013, 05:00 AM   #3
gmphadte is offline gmphadte  India
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Join Date: Jul 2003
Location: Dona paula, Goa
I doubt they are of any use in audio. You can make a rechargeable torch with LEDs or something.

Gajanan Phadte
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Old 4th December 2013, 08:59 PM   #4
williamwally is offline williamwally  United States
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Join Date: Apr 2013
Location: Elgin, IL
Just heard of this:

Updates from Helium: The first supercapacitor-powered portable speaker | Crowd Supply


Seems legit but I don't know enough to have much of an opinion.
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Old 4th December 2013, 09:29 PM   #5
Refugee1 is offline Refugee1  United Kingdom
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Location: Worksop
Those speakers look a little bit to expensive.
They were used for real time clock backup on video recorders where mains failure never lasted more than a few hours.
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