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.

F5 Turbo Builders Thread
F5 Turbo Builders 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 12th August 2017, 04:10 PM   #4801
Erlend Sæterdal is offline Erlend Sæterdal  Denmark
diyAudio Member
 
Join Date: Mar 2007
F5 Turbo Builders Thread
Any experience with floating ground in the F5turbo?
  Reply With Quote
Old 12th August 2017, 08:36 PM   #4802
Erlend Sæterdal is offline Erlend Sæterdal  Denmark
diyAudio Member
 
Join Date: Mar 2007
F5 Turbo Builders Thread
Quote:
Originally Posted by Erlend Sæterdal View Post
Any experience with floating ground in the F5turbo?
Had a huge hum problem with 2 channels at the input. With only one nothing at all. Solution must be a little resistor in the gnd in?

Jims Pcb



Erlend Saeterdal - Erlend Saeterdal added a new photo. | Facebook
  Reply With Quote
Old 16th August 2017, 07:48 AM   #4803
vemsom is offline vemsom  Sweden
diyAudio Member
 
Join Date: Jun 2005
Location: Stockholm
F5 Turbo Builders Thread
Quote:
Originally Posted by Erlend Sæterdal View Post
Had a huge hum problem with 2 channels at the input. With only one nothing at all. Solution must be a little resistor in the gnd in?

Jims Pcb


Have you tried the PSU / grounding suggested by NP for the f5 turbo?

Click the image to open in full size.
  Reply With Quote
Old 21st August 2017, 07:11 PM   #4804
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Please note the different symbols used for the chassis ground/Safety Earth/PE and the PSU power ground/PSU zero volts.
This is important.

Note also that the secondary centre tap goes directly to the first capacitor pair.

having got those bits wired correctly it becomes important to minimise the loop areas of the charging circuits to minimise the EMI.
__________________
regards Andrew T.

Last edited by AndrewT; 21st August 2017 at 07:13 PM.
  Reply With Quote
Old 21st August 2017, 09:04 PM   #4805
Erlend Sæterdal is offline Erlend Sæterdal  Denmark
diyAudio Member
 
Join Date: Mar 2007
F5 Turbo Builders Thread
Thanks Andrew but I use BUS. I realized it is not possible with only four rectifiers pr. channel. So I will use 8. The reason is common transformer. I think bus results in better sound.
  Reply With Quote
Old 22nd August 2017, 09:32 PM   #4806
Liliya is offline Liliya  Norway
diyAudio Member
 
Join Date: Aug 2003
Location: 3370 Vikersund
BUS?? Explain. Drawing?

Eivind S
  Reply With Quote
Old 22nd August 2017, 10:04 PM   #4807
Erlend Sæterdal is offline Erlend Sæterdal  Denmark
diyAudio Member
 
Join Date: Mar 2007
F5 Turbo Builders Thread
Quote:
Originally Posted by AndrewT View Post
Why are you doubling up the hard-wiring of the smoothing caps?
Bring the rectifier in at one end. Take the power out at the other end.

Eyvind this is what I call "bus"
  Reply With Quote
Old 23rd August 2017, 05:49 AM   #4808
Erlend Sæterdal is offline Erlend Sæterdal  Denmark
diyAudio Member
 
Join Date: Mar 2007
F5 Turbo Builders Thread
Default Gnd enclosure

As my backplate is not metal I could have a problem with electrical connection of the enclosure parts. I'll connect the two heatsinks at the backplate with a copper 2 cm wide and ground my input to that trough 10 ohm and a capacitor. Do you think that's an idea? ? I can't post pictures even that I have paid Diyaudio 20 dollars for membership.
  Reply With Quote
Old 23rd August 2017, 09:04 AM   #4809
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally Posted by Erlend Sæterdal View Post
.......... I can't post pictures even that I have paid Diyaudio 20 dollars for membership.
Don't post pictures.
Attach them !

How to attach images to your posts.

And registration here is free.
__________________
regards Andrew T.
  Reply With Quote
Old 31st August 2017, 09:18 PM   #4810
Erlend Sæterdal is offline Erlend Sæterdal  Denmark
diyAudio Member
 
Join Date: Mar 2007
F5 Turbo Builders Thread
Thats what I try to.

Have anyone tried other rectifiers then MUR 3020 for the turbo? I think they are very bad sounding.
  Reply With Quote

Reply


F5 Turbo Builders 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
F5 Turbo Circuit Boards chchyong89 Pass Labs 2404 8th October 2017 08:14 PM
B1 builders thread Bas Horneman Pass Labs 722 16th November 2016 08:26 AM
F5 Turbo is posted Nelson Pass Pass Labs 636 13th January 2016 12:05 PM
F5 turbo problems Rob Dingen Pass Labs 17 11th January 2013 09:38 PM
F5 Turbo ............. if only !!!!!! a.wayne Pass Labs 23 21st January 2012 03:24 AM


New To Site? Need Help?

All times are GMT. The time now is 01:01 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki