Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Develop ultra capacitor power supply and LiFePO4 battery power supply
Develop ultra capacitor power supply and LiFePO4 battery power supply
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 7th September 2018, 08:57 PM   #11
esl 63 is offline esl 63
diyAudio Member
 
Join Date: Aug 2010
Some 25V Electrolytics and then polyprop close to the consumer circuit, this could work... I want to see measurements as well, maybe a shunt regulator could do the final dBs..
  Reply With Quote
Old 7th September 2018, 09:01 PM   #12
GOR3 is offline GOR3  United States
diyAudio Member
 
Join Date: Jun 2011
Location: Connecticut
Rayma,
I've had the same experience as Ian over about the same period of time. I use two cells, one to recharge while the other is in place, so each has about half the use (until one of them, harboring an undisclosed suicide wish, became involved in a brief but spectacular welding incident).
George
  Reply With Quote
Old 7th September 2018, 09:08 PM   #13
wcwc is offline wcwc  United States
diyAudio Member
 
Join Date: Oct 2011
Would each power supply only be able to supply power to one location? Do we treat it like a regulator?
  Reply With Quote
Old 7th September 2018, 10:03 PM   #14
iancanada is offline iancanada  Canada
diyAudio Member
 
iancanada's Avatar
 
Join Date: Dec 2009
Location: Toronto
Develop ultra capacitor power supply and LiFePO4 battery power supply
@wcwc

Try one rail for one location as possible as you can. However based on my real experience, one rail for multiple location would still be OK due to the very low internal impedance. Just trust your ears.

I do not suggest using and LDO or regulator after LifePO4 or ultra capacitor power supplies, that could degrade the power supply quality.

A lot of people use the small battery manage board for my FIFO project. It's OK, doesn't change the good sound quality, but just feels like a prototype. I'm gonna design a completed all in one solution this time, more closed to finished .

Regards,
Ian
  Reply With Quote
Old 7th September 2018, 10:18 PM   #15
analog_sa is offline analog_sa  Europe
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Cascais
Develop ultra capacitor power supply and LiFePO4 battery power supply
Hi Ian. How do you intend to do the switching between the ultracap banks? Relays?

Great projects as always, cannot wait
  Reply With Quote
Old 7th September 2018, 10:19 PM   #16
mcluxun is offline mcluxun  United States
diyAudio Member
 
Join Date: Nov 2010
Subscribed.
I'm thrilled to use them in my system.

Last edited by mcluxun; 7th September 2018 at 10:28 PM.
  Reply With Quote
Old 7th September 2018, 10:29 PM   #17
acg is offline acg  Australia
diyAudio Member
 
Join Date: Oct 2013
Location: Sunshine State
Subscribed. Very interested.
  Reply With Quote
Old 7th September 2018, 10:51 PM   #18
iancanada is offline iancanada  Canada
diyAudio Member
 
iancanada's Avatar
 
Join Date: Dec 2009
Location: Toronto
Develop ultra capacitor power supply and LiFePO4 battery power supply
Quote:
Originally Posted by analog_sa View Post
Hi Ian. How do you intend to do the switching between the ultracap banks? Relays?

Great projects as always, cannot wait
@analog_sa

To switch between ultra capacitor banks, relays would have better isolation performance. However, they are a bit noisy, even to switch them every 5 to 10 minutes.

MOSFETs don't have this kind of problem, but they have small leak capacitance around tens of pF. This number could be still reduced by half if to switch both ground and power rail at same time.

MOSFET solution could also be complicated but more flexible.

It's really hard to decide

Regrads,
Ian
  Reply With Quote
Old 8th September 2018, 04:03 AM   #19
iancanada is offline iancanada  Canada
diyAudio Member
 
iancanada's Avatar
 
Join Date: Dec 2009
Location: Toronto
Develop ultra capacitor power supply and LiFePO4 battery power supply
I have enough LifePO4 cells to do the test

Click the image to open in full size.
LifePO4BatteryPack
by Ian, on Flickr

Ian
  Reply With Quote
Old 8th September 2018, 09:52 AM   #20
clsidxxl is offline clsidxxl  France
diyAudio Member
 
clsidxxl's Avatar
 
Join Date: Sep 2012
Location: Strasbourg
Hi Ian,The most famous subject of the year
  Reply With Quote

Reply


Develop ultra capacitor power supply and LiFePO4 battery power supplyHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: ultra low noise power supply with 6 LT3045 Shutdown98 Swap Meet 1 13th June 2018 08:28 PM
Ultra Low Noise Lab Power Supply branadic Equipment & Tools 0 4th September 2017 07:02 PM
Battery power/power supply from wall charger for BT speaker satx Chip Amps 72 3rd July 2015 11:28 PM
Scavenging ultra low noise power supply jackinnj Power Supplies 3 7th September 2008 05:32 PM


New To Site? Need Help?

All times are GMT. The time now is 12:55 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki