Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

ECL82/6BM8 as rectifier?
ECL82/6BM8 as rectifier?
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
Thread Tools Search this Thread
Old 12th December 2003, 09:31 PM   #1
svokke is offline svokke  Belgium
diyAudio Member
Join Date: Apr 2003
Location: Leuven
Default ECL82/6BM8 as rectifier?

In this article at TNT-audio the author writes that in his preamp (Korato KVP-20) the ECL82 tube is used as rectifier. Checked it here at korato.com and it just says that it is used in the power supply.
What's going on here. Why is there a triode/pentode sitting in the powersupply. Is it used as some kind of regulator?
In illusion comfort lies
  Reply With Quote
Old 12th December 2003, 10:45 PM   #2
dhaen is offline dhaen  Europe
diyAudio Moderator Emeritus
dhaen's Avatar
Join Date: Jun 2002
Location: U.K.
I didn't see the word "rectifier" mentioned, just "power supply".
In fact the ECL82, and similar triode - pentodes make good power regulators, and I think this may be one applied case. The triode section as an error amp, and the pentode section as the series pass element.
It does seem a bit of a shame to use one that's good for audio in a PSU, when there are others Eg ECL80, ECL85/805 that are just as suitable for regulators, but not so good for audio.

BTW You can use any triode or pentode as a rectifier, just watch out for grid power dissapation. It has been suggested (on this forum I think) that a controlled rectifier could be built this way.
  Reply With Quote
Old 12th December 2003, 10:46 PM   #3
Brett is offline Brett
diyAudio Member
Brett's Avatar
Join Date: Jan 2002
Most likely it's part of a series regulator, and as they don't mention a specific rectifier tube, I'll bet it uses SS rectification.

I suppose it could be used as a rectifier, but with millions of decent NOS rectifiers, plus the apparently increasing quality of the Russian and Chinese made units, why would you?
  Reply With Quote
Old 13th December 2003, 12:49 AM   #4
fdegrove is offline fdegrove  Europe
diyAudio Senior Member
fdegrove's Avatar
Join Date: Aug 2002
Location: Belgium

In fact the ECL82, and similar triode - pentodes make good power regulators, and I think this may be one applied case.
Yes, and from a manufacturers' POV they picked a triode/penthode that's still manufactured up to this day.
The ECL80, ECL85/805 aren't as far as I know.

I very much doubt they'd use it as a diode.

  Reply With Quote


ECL82/6BM8 as rectifier?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
ECL82 (6BM8) PP Stereo Family_Dog Tubes / Valves 27 30th May 2009 06:21 PM
6bm8/ECL82 vs EL84 akimball442 Tubes / Valves 15 26th January 2009 01:34 PM
6bm8 / Ecl82 Pse & Srpp argo Tubes / Valves 4 8th April 2005 09:47 PM
Anybody heard about Tarzian Silicon Rectifier for Tube Rectifier Replacement? zxx123 Tubes / Valves 4 21st February 2005 04:02 AM
ecl82/6bm8 push pull special designs Glass_painter Tubes / Valves 1 19th April 2003 06:45 PM

New To Site? Need Help?

All times are GMT. The time now is 10:51 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio