Go Back   Home > Forums > Amplifiers > Tubes / Valves

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

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 5th April 2010, 06:29 AM   #1
mltube is offline mltube  United States
diyAudio Member
 
Join Date: Feb 2010
Location: Dark side of the Moon
Lightbulb A Direct-Coupled Amplifier with Cathode Follower 6V6

I found this circuit interesting, and thought it may be of interest to some of you. Have any of you built the same or similar?
Attached Images
File Type: jpg Direct-Coupled-6V6-Cathode-Follower-Tube-Amp-Schematic.jpg (77.4 KB, 660 views)
  Reply With Quote
Old 5th April 2010, 10:11 AM   #2
jueic is offline jueic  Taiwan
diyAudio Member
 
Join Date: Jun 2004
Location: Taipei
Here is another one with very similar DC arrangement..

http://www.plitron.com/pdf/polisois1957.pdf
  Reply With Quote
Old 5th April 2010, 11:17 AM   #3
Merlinb is offline Merlinb  United Kingdom
diyAudio Member
 
Merlinb's Avatar
 
Join Date: May 2006
Location: Lancashire
Incidentally, Mltube's circuit is taken from this article:

http://thermionic.info/bates/Bates_D...thFollower.pdf
  Reply With Quote
Old 5th April 2010, 12:28 PM   #4
jane is offline jane  Norway
diyAudio Member
 
jane's Avatar
 
Join Date: Jul 2004
Location: Norway
It is hard to see how the 6SJ7 with just 73V at the plate can produce all the voltage swing needed for a cathode follower output stage.
Maybe I'm missing something?

Jan E.
__________________
Life is hard - Then you die.
  Reply With Quote
Old 5th April 2010, 03:59 PM   #5
mltube is offline mltube  United States
diyAudio Member
 
Join Date: Feb 2010
Location: Dark side of the Moon
Thank you Merlinb, the link you provided was helpful. I recieved the schematic from a friend of mine that has since moved away. I had always wanted to build it, but preoccupied with other projects. I will be trying the circuit in the next couple days and will post results.
Thanks again

And thanks to all that responded, much appreciation!

Last edited by mltube; 5th April 2010 at 04:05 PM. Reason: Forgot to thank others also
  Reply With Quote
Old 29th March 2011, 02:55 AM   #6
diyAudio Member
 
Join Date: Sep 2010
Location: Winnipeg
Hi Mltube - how did this amp turn out?
  Reply With Quote
Old 31st March 2011, 06:41 PM   #7
mltube is offline mltube  United States
diyAudio Member
 
Join Date: Feb 2010
Location: Dark side of the Moon
I haven't been able to do much, fighting issues with ultra rare lung disease. No cure, but electronics makes everything seem better.
I have been working on battery powered tube regen radio lately, (safer then HV) meds make hands shake to much with hv.
Thank you for responding, I will see if I can get the cathode drive 6v6 circuit going soon when things get better. It is not my design, but looks like it has good posibilities.
By the way how's the weather in Winipeg? I am originally from Warroad, just across the border. I sure miss Lake of the Woods area.
Sorry very off topic, stuck in house 24/7....
Michael
  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
How to design a direct coupled SE amplifier? keithpeter Tubes / Valves 2 3rd September 2009 08:59 PM
Direct-coupled cathode/source follower driver in PP? ray_moth Tubes / Valves 83 17th July 2008 02:53 AM
Question about biasing heater above cathode in a direct coupled circuit. G Tubes / Valves 1 26th May 2007 11:42 AM
An intriguing 300B SE-direct-coupled-amplifier Antonio Tucci Tubes / Valves 27 8th February 2006 09:34 AM
Question about direct coupling a anode follower into a cathode follower. G Tubes / Valves 45 29th July 2004 06:47 PM


New To Site? Need Help?

All times are GMT. The time now is 08:30 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