Irfp240/9240 A75 - 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 4th July 2008, 01:59 PM   #1
PassFan is offline PassFan  United States
diyAudio Member
 
Join Date: Aug 2001
Location: Central FL
Default Irfp240/9240 A75

I recently re assembled my old A75 into a new case using half the output devices and Oh WOW... I'd forgotten what a big class A amp sounded like. Anyway, my 240/9240's are running at about .180 millivolts per channel for 6 devices and are about 59 deg. C. Does anyone know what the temp. peak is for these devices and how long I can expect them to last at this temp.? I lost my old datasheets and cant find these at IR's site. Thanks in advance.
  Reply With Quote
Old 4th July 2008, 02:08 PM   #2
MEH is offline MEH  United States
diyAudio Member
 
Join Date: Feb 2007
They are Vishay parts now.

IRFP240
IRFP9240
  Reply With Quote
Old 4th July 2008, 02:46 PM   #3
PassFan is offline PassFan  United States
diyAudio Member
 
Join Date: Aug 2001
Location: Central FL
Many thanks, just what I needed.
  Reply With Quote
Old 6th July 2008, 02:52 PM   #4
diyAudio Member
 
Join Date: Mar 2008
Default Re: Irfp240/9240 A75

Quote:
Originally posted by PassFan
I recently re assembled my old A75 into a new case using half the output devices and Oh WOW... I'd forgotten what a big class A amp sounded like. Anyway, my 240/9240's are running at about .180 millivolts per channel for 6 devices and are about 59 deg. C. Does anyone know what the temp. peak is for these devices and how long I can expect them to last at this temp.? I lost my old datasheets and cant find these at IR's site. Thanks in advance.

hi,

i want to know how did you mswr this 0.180 volts. is this at output mosfets?

thanks
  Reply With Quote
Old 6th July 2008, 02:58 PM   #5
diyAudio Member
 
MEGA_amp's Avatar
 
Join Date: Oct 2003
Location: CT
measure across the source resistors of the output mosfets.
  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
IRF540/9540 or IRFP240/9240 Ermac Solid State 18 13th January 2012 01:06 AM
Matched IRFP240/9240's Landoctor Swap Meet 19 13th January 2011 10:21 AM
IRFP240/9240 amp Schematics Zero Cool Solid State 8 25th May 2009 03:38 PM
IRFP240/9240 -Vbs,Drivers ??? zox2003 Solid State 42 4th April 2005 06:37 PM


New To Site? Need Help?

All times are GMT. The time now is 10:42 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