ARC style regulated psu, tubed - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies

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 27th August 2010, 12:24 PM   #1
sajti is offline sajti  Hungary
diyAudio Member
 
Join Date: Apr 2003
Location: Vác, Hungary
Default ARC style regulated psu, tubed

Hi,

I like the ARC style, well regulated power supply. The only thing I hate, is the MOSFET, they use as series pass element.
I try use tube in that position. The circuit is not yet tested, because of my limited time.
Please comment the circuit! Is it worth, to try?

Sajti
Attached Images
File Type: png 6550_tube_reg.png (3.3 KB, 67 views)
  Reply With Quote
Old 27th August 2010, 12:29 PM   #2
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
Why not use Jan Didden's well-designed and proven T-Reg?
__________________
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
  Reply With Quote
Old 27th August 2010, 12:36 PM   #3
sajti is offline sajti  Hungary
diyAudio Member
 
Join Date: Apr 2003
Location: Vác, Hungary
Quote:
Originally Posted by SY View Post
Why not use Jan Didden's well-designed and proven T-Reg?
I don't know T-Reg. I just want to plan something by myself.

Sajti
  Reply With Quote
Old 27th August 2010, 12:43 PM   #4
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
Nonetheless, you want to at least read through Jan's article about it (I think it's on his linearaudio.nl website) to see what sort of engineering decisions have to be made and what the tradeoffs are.
__________________
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
  Reply With Quote
Old 27th August 2010, 12:57 PM   #5
sajti is offline sajti  Hungary
diyAudio Member
 
Join Date: Apr 2003
Location: Vác, Hungary
Quote:
Originally Posted by SY View Post
Nonetheless, you want to at least read through Jan's article about it (I think it's on his linearaudio.nl website) to see what sort of engineering decisions have to be made and what the tradeoffs are.
I just checked his website. T-Reg looks quite good. I hope, that my regulator can gives same good results.

Sajti
  Reply With Quote
Old 27th August 2010, 01:22 PM   #6
sajti is offline sajti  Hungary
diyAudio Member
 
Join Date: Apr 2003
Location: Vác, Hungary
There can be some planning decisions, I have to explain:

I use 6550, because I have some of them. And the parameters are ideal for this application. The power supply should give 330V/40mA. This means 120V on the 6550, and -Ug1 about -7-8V, which is acceptable for the opamp.
For lower output current ECC99/5687/ECC82 is useful as well.
I use no series pass triode, such as 6AS7G, because they need more negative grid voltage, which is out of the opamp's output range.
I use the 6550 as tetrode, not as triode. Triode connection can be more simple, without 100uF capacitor. But the additional filtering on the 2nd grid means much better ripple rejection without increasing the loop feedback.

Sajti
  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
plain Big caps on psu vs. carlosfm style Snubber shiraz Chip Amps 25 9th September 2008 03:11 PM
Choke loaded PSU versus VR tube regulated PSU? G Tubes / Valves 37 20th March 2008 10:45 PM
Regulated or no regulated PSU? Higo Chip Amps 2 16th July 2003 04:38 PM


New To Site? Need Help?

All times are GMT. The time now is 05:15 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