6AG7 UL Curves

sorenj07 · 12th October 2007, 09:37 PM

does anybody have them, or have the equipment to trace them out? Standard 40% winding ratio...

percival007 · 14th October 2007, 08:55 AM

Not sure if this is what you're after?

http://www.r-type.org/pdfs/6ag7.pdf

Cheers, James.

sorenj07 · 14th October 2007, 05:34 PM

Thanks, but those are regular pentode curves..

Tubes4e4 · 15th October 2007, 08:41 PM

Hi,

tracing UL-curves is not a big deal per se, but picking a suitable operation point for any UL ratio in advance (before doing the tracing) is. But some experience helps, especially if one has the trioded curves already.

Sadly, I don´t have any thrustworthy 6AG7 (or 6AK7) in the drawers.

Regards,

Tom

P.S: Among others, some of my UL tracings you can find here. F.e, have a look at the ECL82 set of UL tracings to see how critical the OP (Ea, Ia, Eg1) can be when it comes to chose on an UL ratio.

sorenj07 · 15th October 2007, 11:20 PM

Thanks for the very informative page! I didn't know you were Tom - you post on AA now and then, right? Anyway I'm kind of putting aside the 6AG7 project at the moment, in favor of a PP 6S19P amplifier.. As good as pentodes in UL can sound, I've been bitten by the triode bug.

The problem is, I should probably load up on 6S19P's before finishing this project, because as far as I know, this will have been the first project to implement 6S19P's in push-pull accessible by Google. And that means price hiking! Within a year or so I've seen the prices of those Russian PIO caps skyrocket on eBay, they know what they're doing

Tubes4e4 · 16th October 2007, 05:15 AM

Quote:

I didn't know you were Tom - you post on AA now and then, right?

Sorry, no - I don´t even know what AA is, except for a battery size

Tom

sorenj07 · 16th October 2007, 05:17 AM

audio asylum? maybe I'm mistaken.. or is it audiokarma? no big deal.

12th October 2007, 09:37 PM	#1
sorenj07 diyAudio Member Join Date: May 2006	6AG7 UL Curves does anybody have them, or have the equipment to trace them out? Standard 40% winding ratio...

14th October 2007, 08:55 AM	#2
percival007 diyAudio Member Join Date: Sep 2007	6AG7 UL Curves Not sure if this is what you're after? http://www.r-type.org/pdfs/6ag7.pdf Cheers, James. __________________ "An AudioPhool and Proud of it!!"

15th October 2007, 08:41 PM	#4
Tubes4e4 diyAudio Member Join Date: Jul 2005 Location: Leverkusen	Hi, tracing UL-curves is not a big deal per se, but picking a suitable operation point for any UL ratio in advance (before doing the tracing) is. But some experience helps, especially if one has the trioded curves already. Sadly, I don´t have any thrustworthy 6AG7 (or 6AK7) in the drawers. Regards, Tom P.S: Among others, some of my UL tracings you can find here. F.e, have a look at the ECL82 set of UL tracings to see how critical the OP (Ea, Ia, Eg1) can be when it comes to chose on an UL ratio. __________________ If in doubt, just measure.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
6AG7 Amplifier	sorenj07	Tubes / Valves	12	4th June 2011 02:32 PM
6P9/6AG7 Triode Amplifier	sorenj07	Tubes / Valves	3	26th October 2007 01:50 PM
6ag7 metal pentodes	martinab2	Tubes / Valves	4	8th October 2007 07:30 AM
Derive Triode Curves from Pentode Curves?	dsavitsk	Tubes / Valves	3	14th May 2007 06:10 PM
PHL Curves - anybody have?	Bill Fitzpatrick	Multi-Way	2	1st April 2004 07:55 PM

14th October 2007, 05:34 PM	#3
sorenj07 diyAudio Member Join Date: May 2006	Thanks, but those are regular pentode curves..

15th October 2007, 11:20 PM	#5
sorenj07 diyAudio Member Join Date: May 2006	Thanks for the very informative page! I didn't know you were Tom - you post on AA now and then, right? Anyway I'm kind of putting aside the 6AG7 project at the moment, in favor of a PP 6S19P amplifier.. As good as pentodes in UL can sound, I've been bitten by the triode bug. The problem is, I should probably load up on 6S19P's before finishing this project, because as far as I know, this will have been the first project to implement 6S19P's in push-pull accessible by Google. And that means price hiking! Within a year or so I've seen the prices of those Russian PIO caps skyrocket on eBay, they know what they're doing

16th October 2007, 05:17 AM	#7
sorenj07 diyAudio Member Join Date: May 2006	audio asylum? maybe I'm mistaken.. or is it audiokarma? no big deal.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read