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-   -   Develop ultra capacitor power supply and LiFePO4 battery power supply (https://www.diyaudio.com/forums/power-supplies/327105-develop-ultra-capacitor-power-supply-lifepo4-battery-power-supply.html)

iancanada 7th September 2018 03:56 AM

Develop ultra capacitor power supply and LiFePO4 battery power supply
 
2 Attachment(s)
I have been using LifePO4 batteries for my FIFO and DAC project for a long time. And also ultra capacitor power supply recently. I'm very happy with their performance and the sound quality.

http://www.diyaudio.com/forums/digit...ml#post4239435

http://www.diyaudio.com/forums/pc-ba...ml#post5478596

Both ultra capacitor power supply and LiFePO4 power supply are passive power source. They are totally different to all kinds of regulators which are based on feedback. The most important thing is the perfect load response, much better than any regulator.

Both of them are ideal solution for DAC projects with amazing sound quality. Ulara capacitor power supply is a little bit better but the difference is minor. However the LiFePO4 power supply would be cheaper and easy to integrate into a all in one solution.

I'll work on both for sure. But I'd like to start from LifePO4 power supply.

https://farm2.staticflickr.com/1873/...a3ffe144_o.jpg
LiFePO4PowerSupply_1
by Ian, on Flickr

Ian

shattered_dream 7th September 2018 05:04 AM

Interested

comickitkit 7th September 2018 05:07 AM

is it self-recharging while using battery?

iancanada 7th September 2018 11:55 AM

When power is turned on, all the output rails will be pure LifePo4 battery rail and will be also 100% isolated from each other. I don't want to do anything to degrade the quality of the battery power supply. When it's turned off, all batteries will be charged by a CC-CV charger automatically. The charging progress will be managed and with monitoring.

Regards,
Ian

bvtrinh 7th September 2018 12:14 PM

I am interested in the ultra capacitor power supply.

iancanada 7th September 2018 12:48 PM

@ bvtrinh

The ultra capacitor power supply project has already been started for a while. The principle will be more complicated. For multiple power rails, the size will be bigger. And also, the overall cost will be higher. But anyway, it's coming.

Regards,
Ian

merlin el mago 7th September 2018 12:56 PM

Interested.

spikeyw 7th September 2018 07:04 PM

Interested in the battery option with a positive and negative rails. Will there be a GB.

rayma 7th September 2018 07:12 PM

Quote:

Originally Posted by iancanada (https://www.diyaudio.com/forums/power-supplies/327105-develop-ultra-capacitor-power-supply-lifepo4-battery-power-supply-post5538634.html#post5538634)
When power is turned on, all the output rails will be pure LifePo4 battery rail
and will be also 100% isolated from each other.

Ten batteries run around $150. For how many charging cycles will they last?

iancanada 7th September 2018 07:45 PM

@rayma
I have a LifePO4 battery cell which started 4 years ago, for my daily use, still powerful by now. It should have been recharged for more than 400 times if I do it every 3 days. I really love this battery. Much better than any other chemical.

BTW, specification says 1000 times.

Ian


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