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 11th December 2011, 05:03 PM   #191
diyAudio Member
 
Join Date: Aug 2011
Hello!
My friend has sent me this circuit since I used to interest in building a hybrid circlotron amplifier, but not now.

Refer to the circuit builder claimed that "the CIRC1 will develop about 60 watts with 12 volt supplies as long as the power supply can provide the required 13 amps current, as technically it is biased in Class AB but with a high Class A standing current. It is possible to adjust the bias on the CIRC1 to a lower level allowing a much more efficient output stage."

I do a search and the IXTH20N50D is a 500V 20A, what is the highest power to get the most from this device by not causing any harm to its "linearity"?
Attached Images
File Type: jpg Paul Hynes CIRC1.jpg (111.3 KB, 696 views)
  Reply With Quote
Old 11th December 2011, 09:54 PM   #192
steveu is offline steveu  United States
diyAudio Member
 
Join Date: May 2005
Location: Colorado Springs
An important point about this topology is that you need two floating supplies for each power stage, plus another supply for the driver(s), so for stereo you would need five independant power supplies, ie only one of which can be connected to ground.
  Reply With Quote
Old 20th June 2012, 08:05 PM   #193
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
Default Andrea Ciuffoli's Circlotron

in this case Andrea Ciuffoli's circlotron (author from the famous and good known diy projects "Power Follower" and "Cool Follower") could be also of interest - go to
Thorens TEM 3200 clone
  Reply With Quote
Old 10th September 2013, 10:41 AM   #194
JohanH is offline JohanH  Netherlands
diyAudio Member
 
Join Date: Dec 2003
Location: Noord Brabant
I'm biting the bullet on this one and started gathering parts.
In a conversation elsewhere someone mentioned that power dissipation in R11/12 can reach peak values of 1 watt.
As I intend to build this with Vishay bulk foil resistors with a nominal power dissipation of 0,4 watts, I'm wondering I should be worried...

Thanks in advance for your input.

Cheers,
Johan
  Reply With Quote
Old 10th September 2013, 12:21 PM   #195
www.audiohobby.com
diyAudio Member
 
Join Date: May 2001
Blog Entries: 4
If it's important to use those resistors, you could use two to make up the value, unless you plan on really beating the amp to death, then use three.
__________________
I'm not hanging around the forum these days but if you need help: Visit My Website | My YouTube Channel | Email Me | Wheaton's Law |
  Reply With Quote
Old 10th September 2013, 12:47 PM   #196
JohanH is offline JohanH  Netherlands
diyAudio Member
 
Join Date: Dec 2003
Location: Noord Brabant
Ok,

thanks Michael.
Are there other things to consider?

Cheers,
Johan
  Reply With Quote
Old 10th September 2013, 12:55 PM   #197
www.audiohobby.com
diyAudio Member
 
Join Date: May 2001
Blog Entries: 4
That's the only erratum I'm aware of right now.
__________________
I'm not hanging around the forum these days but if you need help: Visit My Website | My YouTube Channel | Email Me | Wheaton's Law |
  Reply With Quote
Old 12th September 2013, 10:41 AM   #198
diyAudio Member
 
Join Date: Sep 2013
I would like to see a PCB for this in the DIYAUDIO store.
Any chance of that happening?

EDIT: Actually, I would like to see at least 3 different circlotron amps in the diyaudio store.
1)This one
2) A power buffer (source follower) to attach to the output of the balanced BA3
3) And something entirely different from Nelsons crazy brain

Last edited by 2 picoDumbs; 12th September 2013 at 10:45 AM.
  Reply With Quote
Old 4th January 2014, 11:19 AM   #199
JohanH is offline JohanH  Netherlands
diyAudio Member
 
Join Date: Dec 2003
Location: Noord Brabant
Quote:
Originally Posted by Michael Rothacher View Post
That's the only erratum I'm aware of right now.
Resistor values and reference of R13,R14 and R15,R16 are reversed in BOM vs schematic. Which is correct?

Thanks in advance,
Johan
  Reply With Quote
Old 4th January 2014, 01:58 PM   #200
www.audiohobby.com
diyAudio Member
 
Join Date: May 2001
Blog Entries: 4
The schematic is the correct one.
  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
Mike's Proposed MTM Mike C Multi-Way 34 5th December 2007 09:33 PM
Inexpensive mike? audiobomber Multi-Way 10 27th February 2007 11:45 AM
Mike's Project - MTM? Mike C Multi-Way 1 9th January 2007 10:09 AM
Circlotron djk Pass Labs 13 20th August 2006 03:19 AM
Measurement mike lndm Everything Else 6 29th March 2006 08:25 PM


New To Site? Need Help?

All times are GMT. The time now is 07:17 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