Pink Faun 2.16X wins Upper Echelon Award

Taiko Audio

Industry Expert
Feb 10, 2017
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taikoaudio.com
#21
Two questions for both Emile and Taiko:
Why do you use more uF (700000/800000) than the uF available on the 99% of the amps market?
Are you considering designing a Dac to get better synergy from both servers?
Regards.
Thats both me :) The powersupply voltage in poweramps is typically much higher, you need more capacitance at lower voltages for storing the same electrical charge, or energy. Without knowing the operating voltage the capacitance does not really tell you that much, from an energy point of view.
 

Taiko Audio

Industry Expert
Feb 10, 2017
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taikoaudio.com
#22

Stereophonic

Well-Known Member
Jun 9, 2013
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#23
Thats both me :) The powersupply voltage in poweramps is typically much higher, you need more capacitance at lower voltages for storing the same electrical charge, or energy. Without knowing the operating voltage the capacitance does not really tell you that much, from an energy point of view.
Thank you Emile.
The question was for Pink Faun too...
So, more voltage, more capacitance needed.
Less voltage ( 400VA ) less capacitance needed. But both uses a lot of capacitance.
 
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Taiko Audio

Industry Expert
Feb 10, 2017
1,384
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260
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taikoaudio.com
#24
Thank you Emile.
The question was for Pink Faun too...
Yeah got that :) These large capacitance values are typically there for powersupply filtering to answer your question more directly. I’ll politely step aside at this point to leave the rest of the thread to Pink Faun.
 
Last edited:
May 30, 2010
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#25
Thats both me :) The powersupply voltage in poweramps is typically much higher, you need more capacitance at lower voltages for storing the same electrical charge, or energy. Without knowing the operating voltage the capacitance does not really tell you that much, from an energy point of view.
Yes, it depends on application. Considering power amplifier what matters most is energy, that depends on capacitance and the square of the capacitance : W = .5 x C x V x V . It is why tube amplifiers have large energy with much lower capacitance.

But considering lower power applications with steady load what matters most is noise and in this case ripple - that is noise - is simply inversely proportional to capacitance - it is why such huge capacitance in top servers. And than we still have the important second order effects of power supply in digital, that are not in text books - let us hope our designers can chime on them!
 
Likes: Taiko Audio

Stereophonic

Well-Known Member
Jun 9, 2013
414
60
263
#26
Yes, it depends on application. Considering power amplifier what matters most is energy, that depends on capacitance and the square of the capacitance : W = .5 x C x V x V . It is why tube amplifiers have large energy with much lower capacitance.

But considering lower power applications with steady load what matters most is noise and in this case ripple - that is noise - is simply inversely proportional to capacitance - it is why such huge capacitance in top servers. And than we still have the important second order effects of power supply in digital, that are not in text books - let us hope our designers can chime on them!
Thanks Micro.
Same application on low power components like preamps, Dacs, Transports, etc....?
 

Pink Faun

New Member
Dec 2, 2019
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www.pinkfaun.com
#27
@Stereophonic Sorry for my late replay. I was not notified by mail of your post.

A computer based streamer (like the Pink Faun streamer 2.16) works with low voltages and high current peaks. The Definition of one Farad is the capacitance able to deliver 1 Ampere for 1 second with 1 Voltage drop. 1V drop is already a lot against 12V, much less again a typical 40-80V of a power amplifier. Because current is high and voltage is low, we need a lot of capacitance to take care to stay above the minimum drop of the voltage regulators.
 

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