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Develop ultra capacitor power supply and LiFePO4 battery power supply
Develop ultra capacitor power supply and LiFePO4 battery power supply
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Old 12th October 2018, 04:05 AM   #141
ofswitched is offline ofswitched  Taiwan
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With audio amplifiers, the demand for energy storage greatly increases because of the non-constant power supply drain (by the amplifier responding to the musical signal). In addition to the energy storage needed to decouple AC from the DC output of the power supply, we need additional energy storage to properly decouple the Audio Amplifier from the DC output of the power supply. This is true even with the most constant “music” we could imagine—a single tone. If we listened to a single 20 Hz tone (considered the lowest frequency humans can hear), the energy surge peaks would occur 20 times per second. This would impose the requirement of energy storage for the 50 ms duration.

To get the real benefit of music power averaging, the energy storage time must be greatly extended because music power requirements are more-or-less “random” in nature and do not follow a specific form. Generally, a longer time constant energy storage mechanism would result in “better” averaging, resulting in lower average power level required of the power supply.

A typical power supply for an audio amplifier:
Is rated for peak audio power because it must supply sufficient power during peak demand (for example a drum beat).
Uses capacitors for energy storage. The energy storage medium must be part of the power supply because the Energy Storage Medium must filter (equalize, decouple) non-constant AC power source, being 50 or 60 Hz. Therefore, the energy must be stored to provide constant (DC) power even though the source provides AC, which is non-constant.
In addition to above: the Energy Storage Medium must filter (equalize, decouple) non-constant power load due to the unpredictable varying nature of a musical waveform.

Last edited by ofswitched; 12th October 2018 at 04:09 AM.
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Old 12th October 2018, 04:54 AM   #142
punci is offline punci
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Default Hi there!!

4x3 low noise ldo 4 parallel,3 serial like 12v-5v- 3.3v with power regenerator easy can beat any ultracaps or batteries.
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Old 12th October 2018, 08:26 AM   #143
TioFrancotirador is offline TioFrancotirador  Poland
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Fantastic job Ian! Still waiting for ultracap PSU, though
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Old 12th October 2018, 10:11 AM   #144
Morde is offline Morde  Finland
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Great work, can't wait for GB!
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My finished headphone amp projects: 1, 2, 3, 4, 5, 6, 7
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Old 12th October 2018, 10:55 AM   #145
sq225917 is offline sq225917  United Kingdom
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Quote:
Originally Posted by punci View Post
4x3 low noise ldo 4 parallel,3 serial like 12v-5v- 3.3v with power regenerator easy can beat any ultracaps or batteries.

They really can't.
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Old 12th October 2018, 01:48 PM   #146
TioFrancotirador is offline TioFrancotirador  Poland
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Quote:
Originally Posted by punci View Post
4x3 low noise ldo 4 parallel,3 serial like 12v-5v- 3.3v with power regenerator easy can beat any ultracaps or batteries.
who are you man? account created today and just one post ... what is your intent here?
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Old 12th October 2018, 02:20 PM   #147
iancanada is offline iancanada  Canada
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Develop ultra capacitor power supply and LiFePO4 battery power supply
Quote:
Originally Posted by punci View Post
4x3 low noise ldo 4 parallel,3 serial like 12v-5v- 3.3v with power regenerator easy can beat any ultracaps or batteries.
According to your knowledge, can you explain what's the difference between LDOs and passive power supplies such as LifePO4 batteries and ultra capacitors?

Thanks,
Ian
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Old 12th October 2018, 06:09 PM   #148
clsidxxl is offline clsidxxl  France
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Quote:
Originally Posted by punci View Post
4x3 low noise ldo 4 parallel,3 serial like 12v-5v- 3.3v with power regenerator easy can beat any ultracaps or batteries.

Click the image to open in full size.


Very nice Ian congratulation
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Old 12th October 2018, 06:48 PM   #149
RolandPSP is offline RolandPSP  Romania
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Develop ultra capacitor power supply and LiFePO4 battery power supply
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Old 15th October 2018, 01:28 AM   #150
punci is offline punci
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Quote:
Originally Posted by iancanada View Post
According to your knowledge, can you explain what's the difference between LDOs and passive power supplies such as LifePO4 batteries and ultra capacitors?

Thanks,
Ian
Sorry about that,but this is my personal experience.Thats why I reg here.
(also my English not so perfect...)
uptone Lps1.2(I sold it,not independent psu) also similar with 4pcs lt3045. other Nesscap 10 farad caps psu sound much better than powerstor 100f. single lt 1963 ldo sound crap,but 4x parallel(no need ballast resistor),and 3 step down with power regenerator very good!!!!Without power regenerator in my home nesscap psu win.I make alredy 8 pcs powerstor psu with relay,4 nesscap psu,around 300 pcs ultracaps total. Vs studer 900 psu, sigma 11 , around 50 lt3045, 60 pcs Lt1963 : 5pcs parallel x4 step down config.

example:

1 stage: power regenerator

2 r core transformer

3 sigma 11,studer 900, or simple Schottky rectifiers

4 5x4 lt1963 12-9-7-5 v

5 lt3045 x4

Listening tests Matter!Other technical bla bla I don't care.
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