A Direct-Coupled Amplifier with Cathode Follower 6V6

mltube · 5th April 2010, 06:29 AM

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?

jueic · 5th April 2010, 10:11 AM

Here is another one with very similar DC arrangement..

http://www.plitron.com/pdf/polisois1957.pdf

Merlinb · 5th April 2010, 11:17 AM

Incidentally, Mltube's circuit is taken from this article:

http://thermionic.info/bates/Bates_D...thFollower.pdf

jane · 5th April 2010, 12:28 PM

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.

mltube · 04:05 PM

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!

platplaas · 29th March 2011, 02:55 AM

Hi Mltube - how did this amp turn out?

mltube · 31st March 2011, 06:41 PM

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

5th April 2010, 12:28 PM	#4
jane diyAudio Member 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.

5th April 2010, 03:59 PM	#5
mltube diyAudio Member Join Date: Feb 2010 Location: Fergus Falls, MN	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

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5th April 2010, 10:11 AM	#2
jueic diyAudio Member Join Date: Jun 2004 Location: Taipei	Here is another one with very similar DC arrangement.. http://www.plitron.com/pdf/polisois1957.pdf

5th April 2010, 11:17 AM	#3
Merlinb diyAudio Member Join Date: May 2006 Location: York	Incidentally, Mltube's circuit is taken from this article: http://thermionic.info/bates/Bates_D...thFollower.pdf

29th March 2011, 02:55 AM	#6
platplaas diyAudio Member Join Date: Sep 2010 Location: Winnipeg	Hi Mltube - how did this amp turn out?

31st March 2011, 06:41 PM	#7
mltube diyAudio Member Join Date: Feb 2010 Location: Fergus Falls, MN	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

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