Good 5V psu @ 200mA - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

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 3rd November 2004, 04:59 AM   #1
diyAudio Member
 
joeling39's Avatar
 
Join Date: Jun 2002
Location: Malaysia
Default Good 5V psu @ 200mA

Hi,

Need help for a schematic of a good +5V power supply capable of sustaining 200mA load to be used for my USB to SPDIF convertor. Any suggestions ?

Regards,
Joe Ling
Malaysia
  Reply With Quote
Old 3rd November 2004, 08:55 PM   #2
diyAudio Member
 
Join Date: Dec 2003
Location: Orange County, CA
Default Power Supply

This is nothing worth building. In several places I use left over cell phone chargers. Many phones, like some Samsung models, the charger is really a 5V 1000mA regulated switching power supply. People who have lost their phone or had their phone die on them give me their chargers so I get a good number of these. Put out the word at work or school you are collecting these for recycling.

Otherwise, get a 6V DC wall wart and connect it through a 7805 3 terminal regulator. Bolt it to some metal to dissipate the heat.
__________________
Dan Fraser
  Reply With Quote
Old 4th November 2004, 05:12 AM   #3
diyAudio Member
 
Join Date: Jul 2003
Location: Dona paula, Goa
dmfraser wrote
Quote:
get a 6V DC wall wart and connect it through a 7805 3 terminal regulator.
will not work. Intead put 2/3 diodes in series to drop the excess.

Instead get a 9V DC wall wart and...

will work.

Gajanan Phadte
  Reply With Quote
Old 4th November 2004, 09:44 AM   #4
diyAudio Member
 
joeling39's Avatar
 
Join Date: Jun 2002
Location: Malaysia
Thanks for the info. I am kind of looking of low noise audio grade power supply. Something a little better than the 3 terminal voltage regulators. Thanks.

Regards,
Joe Ling
  Reply With Quote
Old 4th November 2004, 10:59 AM   #5
Banned
 
Join Date: Aug 2003
Location: A farm on the prairie (protcted from foxes)
Default What is good???

Joe,
I am struggling with the same question, and on my list are from easy/cheap to complex/expensive
- AN8005 (Peter Daniel reported good results with this regulator)
- Reg101-5
-.....
- ALW regulator


Henk
  Reply With Quote
Old 4th November 2004, 11:04 AM   #6
roibm is offline roibm  Romania
Banned
 
Join Date: Dec 2003
Location: Transylvania
Default Re: What is good???

Quote:
Originally posted by Calimero
I am struggling with the same question, and on my list are from easy/cheap to complex/expensive
Is that list a wish list or it reflects what you already tested?
  Reply With Quote
Old 4th November 2004, 12:23 PM   #7
diyAudio Member
 
joeling39's Avatar
 
Join Date: Jun 2002
Location: Malaysia
How about this one ? Will it satisfy the 200mA requirement ?
Attached Images
File Type: jpg zeroalim1.jpg (32.0 KB, 475 views)
  Reply With Quote
Old 4th November 2004, 01:25 PM   #8
Banned
 
Join Date: Aug 2003
Location: A farm on the prairie (protcted from foxes)
Roibm,
I have no experience with AN8005 (They are as far as I know only available via Digkey, and they have high initial order costs so ordering 10 pieces raises their costs to an unexceptable level).

I have reg101-5 planned for the analog supply of my CS8412 (which is now based on TL431 and oscon decoupling).

I have experience with the ALW-regs. They replace the LM317/337 based supply in the I/V and output stage in my DAC. The improvements were astonishing. Which indicated to me that the ALW-reg is much much better that the LM317/337 (not so strange because that is why it has been designed).

I am not experienced enough to tell you where (in which position) to use what type of 'power supply'.
I have used the ALW reg (5V) in the SPDIF-output section of my transport (replacing an 7805 reg) and after listening to it for 3-weeks I concluded the improvements were not worse that reg, and replaced the 7805-reg.
I also have used the ALW 5v and -5V regs for the digital supply of the AD1865 DAC's, (replacing LM317/337 supply) and the improvements were disappointing. I want to try the Reg101-5 solution to see how that performs in that position.

The fact that, in the indicated places (in transport and DAC) the ALW-reg didn't result in significant improvements, indicates to me that other issues underlie that performance (and must be improved first). That conclusion is based on my assumption the ALW-reg is better in all aspects than the referred regulators.

Henk
  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
What makes the good guitar pickup sound so good? darkfenriz Instruments and Amps 15 1st March 2009 11:46 PM
Good switch for Stepped attentuater, Good cheap RCA jacks pjpoes Parts 20 10th March 2005 08:47 PM
Pioneer TS-W304C- anyone have good design for it? and is it good for home sub? XteveX Multi-Way 7 28th April 2004 04:05 AM


New To Site? Need Help?

All times are GMT. The time now is 05:28 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