Battery-powered supplies - Page 22 - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 6th February 2006, 01:21 PM   #211
diyAudio Member
 
Join Date: Oct 2005
Default batt psu for my phono stage

Hi, i was wondering if anyone can help me. I want to build an 18v batt psu for my graham slee phonostage but don't know where to start. After reading a few posts i'm thinking 2 x 12v SLAs with a voltage regulator and some smoothing caps. Put then i'm stuck, what order what values, what else? all help would be greatly appreciated.

Cheers

carlos671
  Reply With Quote
Old 6th February 2006, 01:33 PM   #212
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
First question is does the phono stage use a single rail supply?
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote
Old 6th February 2006, 01:41 PM   #213
diyAudio Member
 
Join Date: Oct 2005
Default closer inspection

on looking at my wall wart i actually need a 24v power supply. where would i find out about that nuuk? the internet is a minefield
  Reply With Quote
Old 6th February 2006, 04:24 PM   #214
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
Well we need to know a bit more! The wallwart supplies 24 volts but is that what is used? Or is the voltage regulated down to say 18 volts? Do you have any documentation?
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote
Old 7th February 2006, 07:58 PM   #215
diyAudio Member
 
Join Date: Oct 2005
i measured the psu with my multimeter and it was kickin out 31.5 volts. Do u know a good place to learn about electronics? what is the diff between dual and single rail? When i do searches i jus get loadsa computer stuff.

Cheers
  Reply With Quote
Old 7th February 2006, 08:08 PM   #216
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Single rail = two wires from the PS, + and - but this requires a big capacitors in series with the speaker, not so good.

Duoble rial = three wires from the PS, +, 0 and - The normal thing.

I really recommend that you take a good look in the datasheet for the LM3886 and also check the application note AN-1192 because there you have all basic info about "Gainclones".
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 7th February 2006, 08:21 PM   #217
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
Learning about all this is really a question of time and research. I try to make things simple to understand on Decibel Dungeon!

You could also try Googling for 'electonics theory' and if you add 'beginners' you should find plenty to get you going.
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote
Old 8th February 2006, 07:23 AM   #218
diyAudio Member
 
Join Date: Oct 2005
i emailed graham slee about the psu. Yes it is a single rail design. What is the nxt step regarding the psu?
  Reply With Quote
Old 8th February 2006, 08:02 AM   #219
Nuuk is offline Nuuk  United Kingdom
diyAudio Member
 
Nuuk's Avatar
 
Join Date: Feb 2003
Location: Somerset, SW England
Being sure of the correct voltage!
__________________
The truth need not be veiled, for it veils itself from the eyes of the ignorant.
  Reply With Quote
Old 8th February 2006, 11:43 AM   #220
diyAudio Member
 
Join Date: Oct 2005
measuring with my multimeter i got 31.5 volts
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Battery powered amp Shpoop Chip Amps 8 26th January 2007 03:41 PM
anyone using a battery powered pre? whatsnext Solid State 15 30th October 2006 11:26 AM
Battery powered PC ? percy Everything Else 15 7th March 2006 07:24 PM
battery powered gc in a tin digi01 Chip Amps 11 25th December 2004 04:11 AM
DC-33 DC Battery Powered Amp?? moe29 Pass Labs 2 26th April 2004 06:41 PM


New To Site? Need Help?

All times are GMT. The time now is 12:20 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2