New Linear Audio publication! - Page 62 - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

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 24th May 2013, 02:56 PM   #611
diyAudio Member
 
Join Date: Feb 2005
Ahh, good - thanks John. I don't feel so alone now.

A pcb layout?

The number of ICs are 'new territory' and the signal electrolytics caps are quite foreign, despite the page 162 explanation - perhaps film caps could be subbed for the smaller ones, but not sure about the larger ones - bipolar? anti-parallel?

I wonder if a 'Cross Feed' cct for headphone amps could be included somehow?
__________________
... jh
  Reply With Quote
Old 24th May 2013, 04:33 PM   #612
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
Elna RFS, ref. the measurement by Mr Pass, don't break the bank either in most values.
(1st series Silmic's were also rather silky smooth, imo)
__________________
No More Mr Nice Guy
  Reply With Quote
Old 25th May 2013, 03:17 AM   #613
diyAudio Member
 
Join Date: Feb 2005
There's quite a few of them - four directly in the signal path with low/no voltage bias over them - and all over the tone controls ...

Perhaps these don't effect the 'quality of the sound' after all?
__________________
... jh
  Reply With Quote
Old 25th May 2013, 03:56 AM   #614
Fanuc is offline Fanuc  United Kingdom
diyAudio Member
 
Join Date: Feb 2006
Location: Anstruther, Fife
Quote:
Originally Posted by jackinnj View Post
The Jung regulator articles are archived on Walt's website: Home
Sadly the PCB is now unobtanium. The bootstrapped '95 one with AD797 I am on about. The newer design with AD825 and floating pre-reg was a complete waste of space.

PS. I am not criticising the PCB layout of the newer versions or ALW's PCB layout etc. In many cases this this was probably better.

Their was just something better about the original. Like a good aged whisky.....

Last edited by Fanuc; 25th May 2013 at 04:05 AM.
  Reply With Quote
Old 25th May 2013, 07:32 AM   #615
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Great City of Turnhout, Belgium
Blog Entries: 7
I layed out the original, when I was still tender, and didn't have the acres of layout under my belt I have now. Looking back on it I don't feel it looks particularly 'nice' (will never make a glossy product picture ) but it did work quite well.
Maybe I should do a reprise?

jan
__________________
I won't make the tactical error to try to dislodge with rational arguments a conviction that is beyond reason - Daniel Dennett
Check out Linear Audio Vol 7!
  Reply With Quote
Old 25th May 2013, 01:03 PM   #616
Fanuc is offline Fanuc  United Kingdom
diyAudio Member
 
Join Date: Feb 2006
Location: Anstruther, Fife
Quote:
Originally Posted by jan.didden View Post
I layed out the original, when I was still tender, and didn't have the acres of layout under my belt I have now. Looking back on it I don't feel it looks particularly 'nice' (will never make a glossy product picture ) but it did work quite well.
Maybe I should do a reprise?

jan
Dear Jan,

I really think you should, but remember you need to allow provision for T-O3P, TO-264 and such like for people with larger members in mind! :-)

Remember, it is going to take 100 Farad at least of the finest quality high ripple capacitors available, possibly up to 1000 Farads of this capacitance to remotely equal the performance of these regulators with respect to feeding the output stage of a power amplifier.

Let us not even get into remote sensing and fully balanced amps just yet....oh and forget the Wurcer cap mod with the AD797 whilst your at it....

Load protection is another issue that needs discussed when output transistors short circuit. VI is not that good esp. with mosfets.

Will be in touch

Kevin
  Reply With Quote
Old 25th May 2013, 01:12 PM   #617
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Great City of Turnhout, Belgium
Blog Entries: 7
Kevin, no offense, but I don't have the time nor ambition to embark on a one size fits all project - I've seen too many projects get grounded here after a lot of effort and endless discussion whether the cap should be red or green.
My offer was for a new layout of the 1995 superreg.
But don't let me hold you back

jan
__________________
I won't make the tactical error to try to dislodge with rational arguments a conviction that is beyond reason - Daniel Dennett
Check out Linear Audio Vol 7!
  Reply With Quote
Old 25th May 2013, 01:15 PM   #618
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
Jan,
Is it possible to increae output volrage without too much trouble and still mainatin performance. I would like to compare your/Jung reg to Salas Shunt I am using in a Phono stage
__________________
...Shape the sound , Man!
  Reply With Quote
Old 25th May 2013, 02:16 PM   #619
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: Great City of Turnhout, Belgium
Blog Entries: 7
You can play with the feedback voltage divider to set Vout, or with the reference, or both. I think the limit is the max Vsupply for the opamp.
There will be *some* change in performance but too small to measure unless you've got Jack's setup.

jan
__________________
I won't make the tactical error to try to dislodge with rational arguments a conviction that is beyond reason - Daniel Dennett
Check out Linear Audio Vol 7!
  Reply With Quote
Old 25th May 2013, 02:21 PM   #620
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
I remember looking into it and thinking you guys were pretty close to the max output. I do believe it was related to the opamp limits. I was hoping to get to the 36V region. I have contacted peranders about his sjolstrom regulator. It is also limited as far as higher voltages are concerned. Thanks for the time and suggestion.
__________________
...Shape the sound , Man!
  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
Good books or videos on audio production, audio engineering, or audio editing tunks14 Everything Else 0 15th April 2011 10:00 PM
PS Audio Linear Control Center and Phono III tomman888 Solid State 2 16th May 2009 09:21 PM
Linear Regulators eranrund Power Supplies 10 11th August 2008 08:11 AM
publication mikek Solid State 0 4th August 2002 03:53 PM


New To Site? Need Help?

All times are GMT. The time now is 02:05 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