New Aleph Mini PCB GB - Page 59 - 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 7th May 2005, 01:31 PM   #581
eugenio is offline eugenio  Italy
diyAudio Member
 
Join Date: Jan 2005
Location: firenze
Now I can start....
what do you think about my heatsinks and part???

Click the image to open in full size.
2 x 0.5KW transformers
2x68000uF 40V ITELCOND caps or 12x10000uF 100V ROE caps

.6W 1% MF PHILIPS resistors
5W 5% MF RESISTA resistors

220uF 35V ELNA CERAFINE caps

IR irf9610
FARICHILD irfp240B

VHD and SOLEN cables
WBT connectors

but I have a question....
can I use this heatsink for an ALEPH 5 ( 1 for channel ) ???

tnx Brian!!!!
__________________
I love music
  Reply With Quote
Old 7th May 2005, 04:47 PM   #582
dhole is offline dhole  United Kingdom
diyAudio Member
 
dhole's Avatar
 
Join Date: Jul 2004
Location: Brighton
Im on the way with my aleph 5 hope my sinks are big enough...

Click the image to open in full size.
Click the image to open in full size.

I am a little confused ,in that I have a 28-28 toroid and I get 37.7 regulated per rail unloaded. I dont have crc etc I just wanted to be as close to the original A5. I will try to get hold of a variac to bring the amp up on , but should the circuit be able to cope?...

dave
  Reply With Quote
Old 7th May 2005, 04:58 PM   #583
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
I like those Potted Transformers. Id like to get my hands on 2 of them.
  Reply With Quote
Old 7th May 2005, 05:04 PM   #584
eugenio is offline eugenio  Italy
diyAudio Member
 
Join Date: Jan 2005
Location: firenze
...dhole.... add the 75°C thermal switch on the heatsink for safety...
like original Aleph....

if heatsink is small the amplifier is safe!!!

good job friend...
sorry for my bad english
__________________
I love music
  Reply With Quote
Old 7th May 2005, 05:13 PM   #585
Coulomb is offline Coulomb  England
diyAudio Member
 
Coulomb's Avatar
 
Join Date: Jul 2002
Location: Ancaster, Ontario
Quote:
Originally posted by dhole
Im on the way with my aleph 5 hope my sinks are big enough...

Click the image to open in full size.
Click the image to open in full size.

I am a little confused ,in that I have a 28-28 toroid and I get 37.7 regulated per rail unloaded. I dont have crc etc I just wanted to be as close to the original A5. I will try to get hold of a variac to bring the amp up on , but should the circuit be able to cope?...

dave
That rail should drop to about 33VDC under load, it depends on the regulation factor of the transformer.

Regards

Anthony
__________________
I like to stay current!
  Reply With Quote
Old 8th May 2005, 11:49 AM   #586
dhole is offline dhole  United Kingdom
diyAudio Member
 
dhole's Avatar
 
Join Date: Jul 2004
Location: Brighton
Thanks for the advice. I am going to put the finishing touches to my amp today.....

Can anyone recommend a 75 degree temp switch?...
dave
  Reply With Quote
Old 8th May 2005, 01:47 PM   #587
dhole is offline dhole  United Kingdom
diyAudio Member
 
dhole's Avatar
 
Join Date: Jul 2004
Location: Brighton
My unbalanced input on my aleph 5... should I use UIN and GND ? UIN being HOt and Gnd the sheild ?
regards
dave
  Reply With Quote
Old 8th May 2005, 02:20 PM   #588
eugenio is offline eugenio  Italy
diyAudio Member
 
Join Date: Jan 2005
Location: firenze
.....balanced input is also used to change voltage gain.....shorting -IN and GND....

Nelson says:

"T1 is a thermostatic switch rated at 75 degrees Centigrade. It is mounted to the rear heat sink. ....
....The amplifier is designed so that the heat sinks will operate approximately 25 degrees C above ambient, for a typical temperature of 50 degrees C.
Temperature protection occurs at 75 degrees C....."
__________________
I love music
  Reply With Quote
Old 8th May 2005, 02:31 PM   #589
Stones is offline Stones  United States
diyAudio Member
 
Stones's Avatar
 
Join Date: Jan 2004
Location: MN
Quote:
Originally posted by dhole
Thanks for the advice. I am going to put the finishing touches to my amp today.....

Can anyone recommend a 75 degree temp switch?...
dave
Farnell
3775586
  Reply With Quote
Old 8th May 2005, 02:54 PM   #590
eugenio is offline eugenio  Italy
diyAudio Member
 
Join Date: Jan 2005
Location: firenze
....this is digikey catalog...


http://dkc3.digikey.com/PDF/T052/1179.pdf
__________________
I love music
  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 versus aleph-3 rmgvs Pass Labs 7 4th February 2010 03:18 PM
Mini Aleph Board & Aleph 2 Parts List gpsmithii Pass Labs 3 16th January 2010 03:58 AM
Aleph Mini / Aleph 3 PCB ready (?) croccodillo Pass Labs 5 27th July 2009 01:51 PM
Difference between Aleph J and Aleph J Mini ppmmcc Pass Labs 5 17th May 2008 06:10 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 05:56 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