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 2nd September 2007, 11:24 PM   #1
diyAudio Member
 
Join Date: Aug 2006
Default Mini Aleph Questions

Hi, I have a few 12.6V Hammond transformers lying around (this one http://www.alliedelec.com/Search/Pro...&tab=specs#tab ). Would these be suitable in making Mini Alephs? And I don't know how to make the power supply section. Does anyone have the schematics for them? Any help would be appreciated
  Reply With Quote
Old 3rd September 2007, 02:16 AM   #2
diyAudio Member
 
vdi_nenna's Avatar
 
Join Date: Oct 2000
Location: PA, USA
Blog Entries: 1
Send a message via Yahoo to vdi_nenna
The current is a bit low, but if you use the mini-a schematic as is, it might be just enough. The mini-a as is runs around 1 amp. Use 1 transfo for each channel.

Here's a very helpful site for beginners.

http://sound.westhost.com/psu-wiring.htm
  Reply With Quote
Old 3rd September 2007, 02:47 AM   #3
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
This should work, but like vdi_nenna said, id use one per channel.
  Reply With Quote
Old 3rd September 2007, 03:24 AM   #4
traw is offline traw  United States
diyAudio Member
 
Join Date: Sep 2005
actually looks like 2 per channel, 4 total, since each is 12.6. one per rail per channel. if tried just 2 at one per rail, would take a beating and likely sag down to 12-13 volts.
  Reply With Quote
Old 3rd September 2007, 03:31 AM   #5
diyAudio Member
 
Join Date: Aug 2002
Location: Toronto, Canada
Hi,

The voltage looks low. The 12.6 V centre-tapped
transformer will give you around +/- 8VDC rails. This
is too low for an Aleph.

What you can try is to discard the centre tap and use
two transformers to generate the +/- rails. That
should get you around +/- 16V DC.

The current capacity of the transformers isn't that high
so you may find that running two channels off this
one pair of transformers will cause the transformers
to get too hot. If that's the case, you can use another
pair for the second channel.

Cheers,
Dennis
  Reply With Quote
Old 3rd September 2007, 05:07 AM   #6
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
I think we are all just sayin, buy a 30$ transformer off ebay and play it safe
  Reply With Quote
Old 3rd September 2007, 03:02 PM   #7
diyAudio Member
 
Join Date: Aug 2006
Alright, thanks for the replies. I think I'm better off buying transformers that are more suitable. Thanks again!
  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
Mini Aleph Board & Aleph 2 Parts List gpsmithii Pass Labs 3 16th January 2010 03:58 AM
mini aleph build questions mr.duck Pass Labs 33 11th May 2009 05:00 PM
WTB: Aleph-mini PCBs and transistor set for Aleph 30 needtubes Swap Meet 4 6th November 2005 06:29 PM


New To Site? Need Help?

All times are GMT. The time now is 11:24 PM.


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