Burning Amplifier BA-2 - Page 49 - 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 21st November 2010, 01:54 AM   #481
JimM is offline JimM  United States
diyAudio Member
 
Join Date: Jul 2006
chad if you mean 350mv across the .47 ohm resistor then current is equal to I=e/r so 0.35v/.47 ohm is 0.74468 amps.
  Reply With Quote
Old 21st November 2010, 04:22 AM   #482
Chad is offline Chad  United States
diyAudio Member
 
Join Date: Aug 2001
Location: Florida, USA
Thanks Jim,

I knew it was a simple formula. Its been almost 18 years since I did electronics theory in the Air Force, my memory is getting a little rusty. Ask my kids they get smarter everyday and I get dumber.

So if I did my calculations correctly for the 3 pair deep output I'm drawing approx. 2.25 amps a channel, which is under Papa's 3 amp recommended maximum. Reading the construction notes he designed it for 1.5 amps a channel, but says up to 3 is okay. Shooting the sinks by the Mosfets with a temp gun gives me about 65 C and the tips of the fins are about 47 C. I may back it down just a bit so its not stressed at all.

Chad
  Reply With Quote
Old 21st November 2010, 09:28 AM   #483
generg is offline generg  Germany
diyAudio Member
 
generg's Avatar
 
Join Date: Jul 2009
Location: Near Frankfurt
250 x 6 deep= 1,5A with 1 Ohm,
With 0,47 Ohm you have to double the Volt values 350 x 2= 7ooA x 3 deep= 2,1A. I hope I made no fault, I always panic a little bit with mathematics.

You seem to have big heatsinks!

I tried axon, I liked silmic more.

Of cause I made a fault. Corrected!

I give up I cannot count any more ( have a cold, lying in bed )

....!
__________________
and the First Wtt is......a really First Class PSS Idea

Last edited by generg; 21st November 2010 at 09:37 AM.
  Reply With Quote
Old 21st November 2010, 10:11 AM   #484
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Quote:
Originally Posted by generg View Post
....( have a cold, lying in bed )

....!
boiled Vino or Rakija .........

I presume olde Schwabische recipe is known to you

__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 21st November 2010, 11:45 AM   #485
generg is offline generg  Germany
diyAudio Member
 
generg's Avatar
 
Join Date: Jul 2009
Location: Near Frankfurt
Oh my wife is coming in my bed and warms me......
__________________
and the First Wtt is......a really First Class PSS Idea
  Reply With Quote
Old 21st November 2010, 02:59 PM   #486
diyAudio Member
 
Join Date: Mar 2003
Location: midwest
Will the burning amp 2 boards be made available again?

russellc
  Reply With Quote
Old 21st November 2010, 05:12 PM   #487
generg is offline generg  Germany
diyAudio Member
 
generg's Avatar
 
Join Date: Jul 2009
Location: Near Frankfurt
In the shop homepage is written that all article will come January....
__________________
and the First Wtt is......a really First Class PSS Idea
  Reply With Quote
Old 22nd November 2010, 08:37 PM   #488
diyAudio Member
 
Join Date: Mar 2003
Location: midwest
Looking at the page again I see that....in fairly large letters....ah, age and the eyes!

Russellc
  Reply With Quote
Old 22nd November 2010, 10:20 PM   #489
Variac is offline Variac  United States
diyAudio Editor
 
Variac's Avatar
 
Join Date: Dec 2001
Location: San Francisco, USA
Not to worry, we have put the production order in: BA-1's, 2's, F-4's F-5's
  Reply With Quote
Old 22nd November 2010, 11:21 PM   #490
diyAudio Member
 
Join Date: Mar 2003
Location: midwest
Quote:
Originally Posted by Variac View Post
Not to worry, we have put the production order in: BA-1's, 2's, F-4's F-5's
Thats great!

Russellc
  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
Burning Amplifier BA-2 Nelson Pass diyAudio.com Articles 5 14th September 2011 06:11 PM
The Burning Amp Festival-Burning Gadgets Preview Zen Mod Everything Else 115 27th October 2007 05:50 PM


New To Site? Need Help?

All times are GMT. The time now is 02:07 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