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

Battery P/S
Battery P/S
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 26th March 2020, 04:55 AM   #1
gigigirl is offline gigigirl
diyAudio Member
 
Join Date: Oct 2016
Default Battery P/S

Hi Guy's, Well today is the 1st day of our lock down, so I decided to have a clear out (long overdue). In doing that I found this that I made up a few years ago. Battery supply from a cordless drill battery. It is set to output 12 VDC from a higher voltage battery, I tried it with a 18 VDC & yes it still works.

Very simple circuit that a friend of mine put together (I am not good at such things, but at least now I understand it) using the venerable LM317, 2 resistors & 2 small caps.

I have a redundant phono amp that it will be ideal for.

However beware, when I made it up I had a switch To allow me to charge the battery in-situ, (BAD IDEA) as I left it charging to long & it fried my ISO phono amp & 304 cart. So don't put the option it in yours if you decide to make one.
Attached Images
File Type: jpg IMG_20200326_162858 (1).jpg (164.9 KB, 114 views)
File Type: jpg IMG_20200326_162913.jpg (162.7 KB, 112 views)
File Type: jpg IMG_20200326_162923.jpg (209.2 KB, 113 views)
File Type: jpg IMG_20200326_171650.jpg (177.1 KB, 110 views)
  Reply With Quote
Old 26th March 2020, 03:09 PM   #2
sgrossklass is offline sgrossklass  Germany
diyAudio Member
 
Join Date: Nov 2004
Location: Germany
Quote:
Originally Posted by gigigirl View Post
However beware, when I made it up I had a switch To allow me to charge the battery in-situ, (BAD IDEA) as I left it charging to long & it fried my ISO phono amp & 304 cart. So don't put the option it in yours if you decide to make one.
I don't get that part. Why would this fry your load? I mean, the LM317 is rated for up to 37 V input, and it's a regulator after all. Given a decent enough minimum load, I wouldn't expect it to have much of an issue keeping the preset voltage even if input voltage were to increase, assuming heatsinking is adequate.

Other than that, the circuit is obviously more than minimal and nothing resembling "low-noise" with no ADJ pin capacitor in sight.
  Reply With Quote
Old 27th March 2020, 05:34 AM   #3
gigigirl is offline gigigirl
diyAudio Member
 
Join Date: Oct 2016
Default No idea, All I know it did.

No idea, All I know it did.
  Reply With Quote
Old 27th March 2020, 08:49 AM   #4
AllenB is offline AllenB  Australia
diyAudio Moderator
 
AllenB's Avatar
 
Join Date: Oct 2008
Battery P/S
What turntable do you have in mind?
  Reply With Quote
Old 28th March 2020, 05:25 AM   #5
gigigirl is offline gigigirl
diyAudio Member
 
Join Date: Oct 2016
Not sure I understand this question. This is a simple battery P/S for a simple MM or MC phono amp.

Voltage range from 12 to 24 VDC.

Cheers
  Reply to this post

Reply


Battery P/SHide 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
Voltage divider noise into a battery powered dac - battery voltage a bit high bigino Digital Line Level 12 9th October 2017 02:06 PM
Battery powered phono stage battery type advice Hikari1 Analogue Source 5 10th September 2013 09:00 PM
+/-18V & +48V from a battery jeppix Power Supplies 24 27th November 2012 02:53 PM
Battery Charger for 15V Li-ION Battery Pack ??? Jan Dupont Parts 2 11th April 2009 02:18 PM
Battery VoLCoM Parts 1 17th August 2003 08:45 AM


New To Site? Need Help?

All times are GMT. The time now is 08:48 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio
Wiki