Go Back   Home > Forums > Amplifiers > Power Supplies
Home Forums Rules Articles Store Gallery 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
Reply
 
Thread Tools Search this Thread
Old 23rd June 2011, 08:11 AM   #1
diyAudio Member
 
Join Date: Jan 2004
Location: GRASSE (France)
Default impact of the capacitors value increase

Hi friends,

I refer to the Nelson Pass F5 power supply skematics:
Click the image to open in full size.

Uploaded with ImageShack.us


On my F5, I plan to increase the total µF value, from 60.000µF per channel up to 90.000µF channel, i.e I will have 6 capacitors instead of 4 as represented on the diagram (C3, C4, C7, C8).

I would like to know if this may require a change in the R5, R6, R7, R8 resistors value ?

Tks

Last edited by Nounours18200; 23rd June 2011 at 08:14 AM.
  Reply With Quote
Old 23rd June 2011, 08:40 AM   #2
sreten is online now sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi, No. The CRC R voltage drop will remain the same with the same load current. rgds, sreten.
__________________
There is nothing so practical as a really good theory - Ludwig Boltzmann
When your only tool is a hammer, every problem looks like a nail - Abraham Maslow
  Reply With Quote
Old 23rd June 2011, 09:00 AM   #3
Banned
 
Join Date: Nov 2006
Location: Torpoint
Just make sure your Bridge Rectifier will be able to cope with the surge current at turn ON.

My Aleph 4 uses 100000uF per rail (x4), I use a 35A 200V Bridge / Per Rail without any surge suppression.
  Reply With Quote
Old 23rd June 2011, 09:45 AM   #4
Atilla is offline Atilla  Norway
Soldering Gun Fanatic
diyAudio Member
 
Join Date: Jul 2008
The price of good bridge rectifiers is such that I always just get the most hardy model. Its really hard to do anything bad to a 50A 1000V bridge
  Reply With Quote
Old 23rd June 2011, 08:47 PM   #5
diyAudio Member
 
Join Date: Jan 2004
Location: GRASSE (France)
Quote:
Just make sure your Bridge Rectifier will be able to cope with the surge current at turn ON.

My Aleph 4 uses 100000uF per rail (x4), I use a 35A 200V Bridge / Per Rail without any surge suppression.

OK, that is what I thought... My bridges are two 68A 600V (each), so I have no fear they can undertake the job in a F5 !...

I have more concerns regarding the same job in my future Aleph -J-X monoblocks, but I have plenty of time to design a proper setup...

By the way, I know that it is not the appropriate topic, but if some of you has a complete skematics of the last version of the Aleph -J-X (not the J version and not the X version) please PM me: I have found a topic but with more than 1,000 pages it is a nightmare to find what we need...

T.h.a.n.k.s

Last edited by Nounours18200; 23rd June 2011 at 08:50 PM.
  Reply With Quote

Reply


Hide this!Advertise here!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
Why not just increase mass? Pashley Subwoofers 18 2nd April 2010 05:23 AM
How to increase Speaker Sensitivity eddylws Multi-Way 4 6th September 2006 07:25 AM
bi-amping with sonic impact t amp/using sonic impact amp for headphones jon_m Class D 3 16th February 2006 10:16 AM
How to increase Sensitivity? ahasz Multi-Way 11 7th July 2005 07:22 AM


New To Site? Need Help?

All times are GMT. The time now is 11:54 PM.

Page generated in 0.08003 seconds (74.43% PHP - 25.57% MySQL) with 10 queries

Copyright ©1999-2012 diyAudio