F5 power amplifier - Page 665 - 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 16th January 2010, 02:19 AM   #6641
wensan is offline wensan  United States
diyAudio Member
 
wensan's Avatar
 
Join Date: Jun 2004
Location: Milpitas
Quote:
Originally Posted by Nelson Pass View Post
You can easily build a balanced F5 with dual diff pairs.

Who wants the glory of posting the schematic?

Like this?
Attached Images
File Type: gif F5_BAL.gif (53.8 KB, 641 views)
  Reply With Quote
Old 16th January 2010, 02:29 AM   #6642
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 wensan View Post
Like this?
nope ;

this way is more functional ;

Attached Images
File Type: gif F5_BAL.gif (53.9 KB, 663 views)
__________________
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 16th January 2010, 02:31 AM   #6643
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
That's one. I can think of a couple others...

  Reply With Quote
Old 16th January 2010, 02:38 AM   #6644
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 Nelson Pass View Post
That's one. I can think of a couple others...

seems that there is more than few ways to skin a ... UGS .....

__________________
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 16th January 2010, 02:48 AM   #6645
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Attached Images
File Type: gif F5rofl.GIF (54.0 KB, 601 views)
__________________
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 16th January 2010, 03:02 AM   #6646
wensan is offline wensan  United States
diyAudio Member
 
wensan's Avatar
 
Join Date: Jun 2004
Location: Milpitas
Quote:
Originally Posted by Nelson Pass View Post
That's one. I can think of a couple others...

I wonder this one will be better or not ?
Attached Images
File Type: gif F5_BAL_a.gif (54.0 KB, 612 views)
  Reply With Quote
Old 16th January 2010, 04:48 AM   #6647
diyAudio Member
 
umut1001's Avatar
 
Join Date: Mar 2007
Location: Istanbul
Quote:
Originally Posted by alazira View Post
Hi umut1001,

Using 15R instead of 10R will reduce the Idss (see fig 4B, page 28 of Borbelly Part 1) of the jFET.
hi..I matched my jfets and there are high IDSS ones.12ma.Maybe i can use them.
Also i am waiting for a good bridged circuit
  Reply With Quote
Old 16th January 2010, 05:39 AM   #6648
Blues is offline Blues  United States
Lightning In A Bottle
diyAudio Member
 
Blues's Avatar
 
Join Date: Sep 2003
Location: The Milky Way
Quote:
Originally Posted by umut1001 View Post
hi..I matched my jfets and there are high IDSS ones.12ma.Maybe i can use them.
Also i am waiting for a good bridged circuit
Save your high Idss jfets for a long tail differential inputs (Aleph J) and use 6 or 7mA BL jfets or even highish GR rated ones. The F5 jfets are set for about 4mA or less.
__________________
Life simplified! Leap into the Warpspeed wormhole... http://www.6moons.com/audioreviews/warpspeed/1.html
  Reply With Quote
Old 16th January 2010, 11:59 AM   #6649
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 wensan View Post
I wonder this one will be better or not ?
interesting ; I admire lateral thinking

but - I'm not sure in amount of benefit
__________________
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 16th January 2010, 01:36 PM   #6650
diyAudio Member
 
bobodioulasso's Avatar
 
Join Date: May 2008
Wensan,
why not to keep the 2 ways NFB?
I have been thinking since the beginning that was an interesting particularity of the F5.
  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
Rockford Fosgate Power 20001 bd amplifier power rating?? pachoorion Car Audio 8 8th May 2011 11:49 PM
Power transformers versus amplifier output power..what is your option? destroyer X Solid State 38 9th May 2009 06:23 PM
McIntosh Power Amplifier Power Guard johnnyrt Solid State 2 23rd August 2007 11:22 PM
Output power for a power amplifier Progg70 Solid State 33 10th September 2006 09:44 AM
Amplifier 3000 Wats Rms Power + Smps Higcht Power Bestiality MARAVILLASAUDIO Class D 1 5th November 2004 05:06 PM


New To Site? Need Help?

All times are GMT. The time now is 04:40 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