is 24-0-24V 800VA ok? - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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 28th April 2006, 01:05 PM   #1
diyAudio Member
 
Join Date: Dec 2005
Location: At work
Default is 24-0-24V 800VA ok?

Hi!

I have a 24-0-24V 800VA transformer and I want it to power my Aleph3 boards...

After the caps and without load (boards not connected ) I have 32.5V...
Also, the FETs I use are IRFP048...

Can this be possible to work without burning?!

With 15-0-15V transformer (+/- 21VDC) the heatsink get ...
Now I wonder what can happen with +/- 32.5V...

Any help?!
  Reply With Quote
Old 28th April 2006, 02:07 PM   #2
MikeW is offline MikeW  United States
diyAudio Member
 
MikeW's Avatar
 
Join Date: Sep 2002
Location: North of Boston
1. It will get much hotted.
2. The outputs are rated for 55 volts and is close to exceeding that with the 64 volt swing - losses for the rails.
http://www.irf.com/product-info/data...a/irfp048n.pdf
3. I would stick with the 15-0-15 and enjoy the music.
4. It woul be good for an Aleph 5.
__________________
MikeW
  Reply With Quote
Old 28th April 2006, 09:43 PM   #3
jeapel is offline jeapel  Canada
diyAudio Member
 
Join Date: Sep 2003
Location: quebec
hi

for (canada) power house is 120vac

take a normal transfo 250va 24vac 10A (with or without center tap)
wired like a autotransformer to get 100 or 110vac
and in my test i get exactly +-25v with 100vac on my big 750va toroid
for my aleph 3

and 100vac give a more low noise toroid

for europe often power house is 240vac maybe a
48vac 5A do the job

bye
  Reply With Quote
Old 28th April 2006, 09:47 PM   #4
jeapel is offline jeapel  Canada
diyAudio Member
 
Join Date: Sep 2003
Location: quebec
i forget :-)

i get +-25v with 100vac with load connected 4A
(2 channel with just 1 transfo)
  Reply With Quote

Reply


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
Want: Toroidal 800VA 2x30VA thim Swap Meet 3 5th April 2009 02:10 AM
FS: Antek Torroid 40V x2, 18V x2, 800VA dweekie Swap Meet 0 7th July 2008 01:24 PM
FS 800va transformer woody Swap Meet 2 25th April 2008 12:57 PM
2 trafos 230V/2x18V 800VA DarkOne Swap Meet 2 15th January 2008 01:50 PM
800VA transformers on UK e-bay bigparsnip Swap Meet 0 14th February 2004 05:20 PM


New To Site? Need Help?

All times are GMT. The time now is 02:56 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2