How this 317 PS works? - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 27th April 2008, 09:08 PM   #1
pftrvlr is offline pftrvlr  United States
diyAudio Member
Join Date: Feb 2007
Location: SoCal
Default How this 317 PS works?

I am building a DAC kit, and this LM317 circuit is new to me. What are the pros? I guess it can provide more output current? But we are talking about low current DAC.

Also the open circuit output is 5.90v instead of 5.0v.
Attached Images
File Type: jpg 317-317.jpg (25.4 KB, 227 views)
  Reply With Quote
Old 27th April 2008, 11:49 PM   #2
TheMG is offline TheMG  Canada
diyAudio Member
Join Date: Jan 2008
Maybe this is designed for better ripple rejection and regulation.

This design only provides higher current if the regulator package or heat sinking is insufficient for a single regulator to dissipate the full voltage drop.
  Reply With Quote
Old 28th April 2008, 12:21 AM   #3
diyAudio Member
leadbelly's Avatar
Join Date: Dec 2002
Location: Calgary, Alberta
The technique is called a tracking preregulator. It has nothing to do with extra current. Read about it in the datasheet:
The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts. Bertrand Russell
  Reply With Quote


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
if this can works... Stee Tubes / Valves 4 12th January 2008 07:37 PM
Anyone know of GC that works from +/-50v Stuart Easson Chip Amps 21 29th November 2006 05:28 PM
CCS, how it actually works? timf Tubes / Valves 17 23rd January 2006 12:20 AM
Some works about me FrankDIY Introductions 1 3rd August 2001 04:30 PM

New To Site? Need Help?

All times are GMT. The time now is 02:16 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2