To choose my irf 240 - 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 1st March 2007, 01:46 PM   #1
gegene is offline gegene  France
diyAudio Member
 
Join Date: Jun 2006
Unhappy To choose my irf 240

Hello Can you help me has to choose which to use
5 mA 20 mA

1 3,558 4,13
2 3,584 4,16
3 3,49 4,04
4 3,501 4,08
5 3,507 4,09
6 3,511 4,08
7 3,516 4,08
8 3,524 4,08
9 3,522 4,1
10 3,53 4,12
11 3,541 4,12
12 3,531 4,12
13 3,453 4,03
14 3,447 4,03
15 3,452 4,03
16 3,469 4,05
17 3,478 4,06
18 3,469 4,05
19 3,476 4,06
20 3,474 4,03
21 3,472 4,05
22 4,468 4,03
23 3,49 4,07
24 3,478 4,05
25 3,465 4,05
26 3,476 4,01
27 3,471 4,01
28 3,446 3,99
29 3,406 3,905
30 3,424 3,97
31 3,446 3,98
32 3,354 3,92
33 3,466 3,98
34 3,442 3,98
35 3,464 4
36 3,371 3,93
37 3,457 4
38 3,463 4,03
39 3,469 4
40 3,475 4,01
41 3,472 4,01
42 3,383 3,55
43 3,375 3,4
44 3,37 3,5
45 3,369 3,46
46 3,452 3,99
47 3,432 3,98
48 3,4 3,95
49 3,37 3,5
50 3,415 3,95

it's for my Aleph 5 (12) and for a Aleph X (16)
Thank you
  Reply With Quote
Old 1st March 2007, 02:05 PM   #2
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
better try it on 200mA
__________________
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 1st March 2007, 07:16 PM   #3
steenoe is offline steenoe  Denmark
diyAudio Member
 
steenoe's Avatar
 
Join Date: Mar 2004
Since they are intended for an Aleph 5, you better match them at 1A, since thats what they will have to put up with, in real life! Just under or at 15V and 10r (at least 20 watt'er) in series will get you in the ballpark! Takes a sturdy regulated supply, though.

Steen
  Reply With Quote
Old 1st March 2007, 07:45 PM   #4
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 steenoe
Since they are intended for an Aleph 5, you better match them at 1A, since thats what they will have to put up with, in real life! Just under or at 15V and 10r (at least 20 watt'er) in series will get you in the ballpark! Takes a sturdy regulated supply, though.

Steen




__________________
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 1st March 2007, 09:38 PM   #5
diyAudio Member
 
Join Date: Feb 2001
Location: Columbia, SC
Actually, the output MOSFETs in an Aleph 5 are run at something closer to .5A.
...But you can run them harder if you want to...

Grey
  Reply With Quote
Old 2nd March 2007, 11:08 AM   #6
gegene is offline gegene  France
diyAudio Member
 
Join Date: Jun 2006
I start again my appairage with alim 15 volts and resistor 10 R
20 Watts.
It is well that
Thank you for your answers.


Eugene
  Reply With Quote
Old 2nd March 2007, 11:14 AM   #7
Phill is offline Phill  France
diyAudio Member
 
Join Date: Nov 2003
Location: France dand le sud
hello


Click the image to open in full size.

if bias = 2A, ==> 0.66 A/fet and R =1.8 ohm

http://domainedupossible.free.fr/pag...H5/aleph55.htm

Phill
__________________
small handyman
  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
[Help] to choose AVR griv_brown Class D 0 7th September 2008 01:02 AM
What to choose?! rinx Multi-Way 12 29th September 2007 10:23 PM
What amp to choose Arne Chip Amps 9 10th August 2007 09:51 AM
Help me choose please fighi77 Tubes / Valves 12 10th June 2007 01:35 AM
Pls Help Choose a Fan JojoD818 Solid State 13 21st March 2003 03:58 PM


New To Site? Need Help?

All times are GMT. The time now is 10:44 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