Power Planes - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

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 20th July 2010, 12:00 AM   #1
diyAudio Member
Join Date: Jun 2004
Location: the Netherlands
Default Power Planes

Dear All,

anyone ever considered a 4 or 6 layer amplifier PCB, and design power planes?

The idea is put the output, and power planes on top of each other to reduce magnetic fields.

Pro's and con's?

With kind regards,
  Reply With Quote
Old 20th July 2010, 01:06 AM   #2
diyAudio Member
nigelwright7557's Avatar
Join Date: Apr 2008
Location: Carlisle, England
Its really not needed even with high power amps.

I would use a groundplane tho.

I would otherwise just thicken up power tracks as much as possible to reduce their impedance.
Murton-Pike Systems PCBCAD51 pcb design software. http://murtonpikesystems.azurewebsites.net/
  Reply With Quote
Old 20th July 2010, 01:14 AM   #3
jcx is offline jcx  United States
diyAudio Member
Join Date: Feb 2003
Location: ..
magnetic field radiation/suseptability reduction with multilayer layout could be good, but planes aren't really the appropriate tool at audio frequencies

below MHz currents happily spread out in planes to follow the least resistance path - they will not stay confined in "images" of the traces as in high frequency digital

so you really need to think more of geometrically balanced/common centroid cross section but discrete conductive paths in the layout for the heavy current loops - and consider Class B switching of current draw from + to - rails (maybe interleave/sandwich with the power load/gnd return)

Last edited by jcx; 20th July 2010 at 01:20 AM.
  Reply With Quote
Old 20th July 2010, 07:01 AM   #4
diyAudio Member
Join Date: Jun 2004
Location: the Netherlands
I think one can archive positive (in case of a multilayer board) to keep the power supply lines and outputs on top of each other. It gives a clean PCB as well, and u can keep the high current separated from the line level stuff.

In that case not really full planes, but thick polygon fill traces.

With kind regards,
  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
PCB Ground planes GregH2 Construction Tips 12 7th November 2009 05:53 PM
Ground planes and solidstate? Nordic Solid State 55 26th January 2007 12:24 PM
Ground planes Onvinyl Power Supplies 9 6th March 2006 09:07 PM
MTM with M's on different planes Ed LaFontaine Multi-Way 4 30th June 2005 03:28 AM

New To Site? Need Help?

All times are GMT. The time now is 11:44 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.
Copyright 1999-2015 diyAudio

Content Relevant URLs by vBSEO 3.3.2