Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

F5X -- the EUVL Approach - The Build Thread
F5X -- the EUVL Approach - The Build Thread
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 11th October 2016, 01:02 AM   #1011
pmchoong is offline pmchoong  Malaysia
diyAudio Member
 
pmchoong's Avatar
 
Join Date: Jan 2008
Location: Kuala Lumpur
Hi Markus,

Do you think these white chopping boards will do?
Attached Images
File Type: jpg chopping board.JPG (94.3 KB, 418 views)
  Reply With Quote
Old 11th October 2016, 07:34 AM   #1012
EUVL is offline EUVL  Europe
diyAudio Member
 
Join Date: Oct 2003
Too thick.

POM is commonly known as acetal, or Delrin.
Should be widely available.


Patrick
__________________
xen-audio.com
  Reply With Quote
Old 11th October 2016, 08:22 PM   #1013
Triodethom is offline Triodethom  United States
diyAudio Member
 
Triodethom's Avatar
 
Join Date: Dec 2009
Location: Newnan GA
ebay or local suppliers delrin or pom is very widely avalible in sheets and rods . Easy to work but can be slippery and hard to hold. teflon is also available but at higher cost.
  Reply With Quote
Old 7th December 2016, 07:57 AM   #1014
samoloko is offline samoloko  Bulgaria
diyAudio Member
 
Join Date: Jun 2006
I would like to use Hifi 2000 case Including 2 x 200 mm heatsinks per side
https://www.modushop.biz/site/index....product_id=218
what do you think about alternative placement of parts In order to get better heat transfer - pcb Is mounted between two heatsink and all devices are placed at one row using extension wires from pcb
  Reply With Quote
Old 7th December 2016, 08:46 PM   #1015
Markus is offline Markus  Germany
diyAudio Member
 
Join Date: Mar 2004
Location: Ulm
Considering a bigger housing and bigger heat sinks is certainly not a bad idea. The first for ease of integration and extendability and the second for lower operational temperature.

If you could fit besides the amp boards also the associated rectifiers and regulators to outer heat sinks then integration and testing will become much easier since you have everything needed to operate one channel besides the transformer mounted to one heat sink. Hence you could do all the wiring and pre-integration tests outside.

I will continue my bottle ship hobby with the original housing ...

First listening test were not to too bad BTW.

Cheers
Markus
Attached Images
File Type: jpg P1190430.JPG (360.1 KB, 297 views)

Last edited by Markus; 7th December 2016 at 09:14 PM.
  Reply With Quote
Old 7th December 2016, 09:13 PM   #1016
Markus is offline Markus  Germany
diyAudio Member
 
Join Date: Mar 2004
Location: Ulm
Default Stripping off enamel insulation from trafo wires

Since we had to shorten the transformator secondary wires we had to strip off the enamel insulation but this turned out to be a very time consuming task ( I have 2 amp units, 2 transformers each, 4 secondaries each, 3 wires each, 2 ends each = 96 wire ends) and the results were also not always of the desired quality. If there are residuals of enamel which are hard to see with bare eyes the solder does not wet properly.
I looked around for appropriate tools but the professional tools with a motorized rotating blade cost more than 500.
So I invented my own simple and cheap tool. The idea is to cut a thread on the copper wire and herewith to remove the enamel. I use a M1.6 die for stripping off a wire with 1.55mm diameter. This works perfect, one wire is stripped off within less than half a minute and the solder wetting test show very good results.

Cheers
Markus
Attached Images
File Type: jpg P1190436.JPG (254.2 KB, 285 views)
File Type: jpg P1190438.JPG (258.7 KB, 272 views)
File Type: jpg P1190440.JPG (55.7 KB, 201 views)
File Type: jpg P1190441.JPG (226.9 KB, 95 views)
  Reply With Quote
Old 8th December 2016, 01:18 AM   #1017
EUVL is offline EUVL  Europe
diyAudio Member
 
Join Date: Oct 2003
1511120 KNIPEX - Abisolierer | TME Germany GmbH - Electronic components

9 Euros, made in Germany. Available also from Buerklin.

I know German are used to large houses.
You can always put the entire PSU external.
Gets rid of Tx tray fields, leaves you plenty of space inside the amp.


Patrick
__________________
xen-audio.com
  Reply With Quote
Old 8th December 2016, 06:14 AM   #1018
samoloko is offline samoloko  Bulgaria
diyAudio Member
 
Join Date: Jun 2006
Patrick,
would you please comment post #1014
  Reply With Quote
Old 8th December 2016, 06:20 AM   #1019
EUVL is offline EUVL  Europe
diyAudio Member
 
Join Date: Oct 2003
The approach for case design for a Class A power amplifier has been described in full detail in my article at Linear Audio, using the F5X as an example.
I have an arrangement with Jan Didden to make it available for free download.

You may wish to use that as a reference for your own build.


Patrick
__________________
xen-audio.com
  Reply With Quote
Old 8th December 2016, 07:43 AM   #1020
samoloko is offline samoloko  Bulgaria
diyAudio Member
 
Join Date: Jun 2006
Patrick,
thank you for reply
I read your article but there Is one heatsink for side not 2
In that regard do you see drawbacks from placing devices In one raw spaced equally on two heatsinks
  Reply With Quote

Reply


F5X -- the EUVL Approach - The Build ThreadHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
F5X -- the EUVL Approach EUVL Pass Labs 877 20th October 2015 07:48 PM
Potential EUVL F5X designed case user distribution check pchw Group Buys 1004 27th February 2013 03:32 PM
GB 2SK3497/2SJ618 for EUVL F5X or other projects pchw Group Buys 266 8th April 2012 06:05 PM
[B]PRP resistor group buy for the EUVL F5X build[/B] NicMac Group Buys 70 4th February 2012 04:20 PM
New Saburo Build thread Wha' DIYa know? Full Range 94 17th October 2010 04:49 PM


New To Site? Need Help?

All times are GMT. The time now is 06:15 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki