MOSFET Amplifier IRFP240/IRFP9240 - Page 22 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 30th April 2010, 11:00 AM   #211
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by Valenca View Post
Apex, and power on the HV350 with 45v + / - PSU, can you be?
This is low, but can work, power will be 70W on 8R load.
  Reply With Quote
Old 30th April 2010, 11:11 AM   #212
Valenca is offline Valenca  Brazil
diyAudio Member
 
Join Date: Nov 2007
Apex, this voltage is only test... Now I'm on my work (informatica) when I get home, I check this problem in HV350.

Thank you !
  Reply With Quote
Old 30th April 2010, 11:27 AM   #213
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by Valenca View Post
Apex, this voltage is only test... Now I'm on my work (informatica) when I get home, I check this problem in HV350.

Thank you !
Ok, I use fets from many factorys IR, Fairchild, Haris... and gate voltage for bias is very diferent 2,5-3,5V (5-7V gate to gate), but that can be easy set by change 470R in base to colector of 2N5551 (BC546).
Regards
  Reply With Quote
Old 30th April 2010, 11:45 AM   #214
Valenca is offline Valenca  Brazil
diyAudio Member
 
Join Date: Nov 2007
Apex,
Question 1: the Zeners is 15v right ?
Question 2: the input capacitor is 1mf non polarized, but i used polarized...

Thank you.
  Reply With Quote
Old 30th April 2010, 12:28 PM   #215
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by Valenca View Post
Apex,
Question 1: the Zeners is 15v right ?
Question 2: the input capacitor is 1mf non polarized, but i used polarized...

Thank you.
1: Zeners are 15V
2: Polarized capacitor on input can't cause any distorsion
Do you use BC337 and BC327 in VI limiter?
  Reply With Quote
Old 30th April 2010, 12:41 PM   #216
Valenca is offline Valenca  Brazil
diyAudio Member
 
Join Date: Nov 2007
Yes, is the same your schema #171 post.
  Reply With Quote
Old 30th April 2010, 12:49 PM   #217
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by Valenca View Post
Yes, is the same your schema #171 post.
Do you use separate wires for input GND and power GND from PSU?
  Reply With Quote
Old 30th April 2010, 02:02 PM   #218
Valenca is offline Valenca  Brazil
diyAudio Member
 
Join Date: Nov 2007
não, eu juntei os dois GND.
  Reply With Quote
Old 30th April 2010, 02:03 PM   #219
Valenca is offline Valenca  Brazil
diyAudio Member
 
Join Date: Nov 2007
Sorry,

no, I joined the two GND
  Reply With Quote
Old 2nd May 2010, 12:14 PM   #220
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Try to remove 100nF from VI limiter.
  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
IRFP240&IRFP9240 power amplifier schematic mos Solid State 31 26th June 2012 08:21 AM
IRFP240 / IRFP9240 MOSFETs danieljw Swap Meet 8 4th July 2009 01:51 AM
Wtb: Irfp240 / Irfp9240 folkeb Swap Meet 1 10th March 2009 10:18 AM
IRFP240 + IRFP9240 -- pairs jackinnj Swap Meet 1 2nd June 2006 02:22 AM
IRFP240 and IRFP9240 Wanted richeros Swap Meet 1 9th November 2002 12:38 PM


New To Site? Need Help?

All times are GMT. The time now is 04:21 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