Supply rail tracks / wires - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

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 26th January 2002, 10:49 AM   #1
diyAudio Member
Join Date: Dec 2001
Location: UK
Question Supply rail tracks / wires

Can anyone provide a full explanation of the necessary properties of supply rail connections (from smoothing caps in the supply to the actual amplifier circuit, either by PCB track or wire)?

I am aware of how important it is for the amp to see a low impedance, so it gets what it needs when it asks for it.

However, I would like to be able to work out (obviously with knowledge of the amp's PSRR) what one can get away with in terms of impedance of the connection, particularly when using cable, and at what point one gets into a state of diminishing returns (thick wires are awkward physically).

I am also a bit puzzled by PSRR. This is often quoted as "good", "not good" or a number of dB. Presumably it is highly dependent on frequency of the audio signal.

Thanks in advance.

  Reply With Quote
Old 26th January 2002, 11:35 AM   #2
sonnya is offline sonnya  Denmark
diyAudio Member
sonnya's Avatar
Join Date: Oct 2001
Location: Denmark
I have some readings for you :


And the opamp design guide :

Try the last one first.

  Reply With Quote
Old 26th January 2002, 01:57 PM   #3
diyAudio Member
Join Date: Dec 2001
Location: UK
Thanks for these Sonny. Very useful, particularly the last one. These will pre-empt a lot of questions!

  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
Using split rail supply for single rail DC DanX Chip Amps 1 15th March 2008 05:18 PM
I need a negative supply rail--but how? wally.gribbles Tubes / Valves 5 18th February 2008 07:36 PM
Power supply rail sag ash_dac Power Supplies 2 26th November 2006 08:36 PM
Amp supply rail voltages.... Xicarius Everything Else 2 4th August 2004 12:38 AM
Power Supply Secondary wires Mermprin Parts 4 20th July 2004 09:32 AM

New To Site? Need Help?

All times are GMT. The time now is 12:19 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