Vacuum Tube Simulation?

[schnarf]

Hi all,
I'm interested in tube simulation, particularly in the context of  
guitar playing -- I'm a guitar player. I've seen lots of great papers  
by David Yeh (check his website) and I feel like I have a good handle  
on simulating a triode stage. I'm interested to hear what other  
methods people have found useful for this, though.

Now, I haven't seen any papers on simulating the power amp stage,  
which is a bit different because there's an extra port on each tube to  
worry about, and particularly because of the interaction with the  
transformer. Has anybody seen any papers, or does anybody have  
suggestions on where to start with this?

Aaron
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[Pascal Lemoine-2]

Leonardo Di Carlo, someone on this list, has been into pspice modelling.
Check out his page: http://www.fuzone.it/pspice_model.htm

In addition, Bogac Topaktas has submitted this bibliography, including
web pointers, 18 months ago:

Jan Ogrodzki (Editor), "Circuit Simulation Methods and Algorithms",
CRC-Press, 1994.

A. Vladimirescu, "The Spice Book", Wiley, New York, 1994.

W. J. McCalla, "Fundamentals of Computer-Aided Circuit Simulation",
Kluwer Academic Publishers, Boston, 1987.

K.G. Nichols, T.J. Kazmierski, M. Zwolinski, and A.D. Brown, "Overview
of SPICE-like circuit simulation algorithms", IEEE Proceedings -
Circuits, Devices and Systems, August 1994, Volume 141, Issue 4, p.
242-250

P. Mole and H. Rokos, "Techniques for Nonlinear Circuit Simulation",
Editorial, IEEE Proc.—Circuits Devices Syst., vol. 141, p. 241 (1994).

Important web resources on both theory and practice of vacuum tube
circuit modeling and simulation:

W. M. Leach, Jr., "SPICE Models for Vacuum Tube Amplifiers", Journal
of the Audio Engineering Society, Vol. 43, No. 3, pp. 117-126, March
1995. http://users.ece.gatech.edu/~mleach/papers/tubeamp/tubeamp.pdf

Vacuum Tube Preamplifier Analysis and SPICE Simulation,
http://bear.cwru.edu/eecs_cad/tut_spice3_tube.html

A Generalized Algebraic Technique For Modeling Triodes,
http://www.lynx.bc.ca/~jc/model.html

Inside Fender and Marshall Tube Amps, http://www.lynx.bc.ca/~jc/ifmta.html

Circuit Analysis of a Legendary Tube Amplifier: The Fender Bassman
5F6-A, http://www.pentodepress.com/contents.html

Tubes Versus Transistors:
http://users.ece.gatech.edu/~mleach/papers/TubeVsTrans.pdf

Articles and publications at SimulAnalog.org: http://www.simulanalog.org/

David Yeh's Publications: http://ccrma.stanford.edu/~dtyeh/papers/pubs.html



Hope this helps for your specific concern about power amp stage,
Pascal.
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[Bogac Topaktas]

Thanks Pascal! I forgot that post..

The most comprehensive (and widely unknown) resource of information on
modeling and simulation of tube amplifiers is Eric K. Pritchard's Patents:

USpat# 4,809,336; 4,995,084; 5,133,014;
5,434,536; 5,636,284; 5,734,725; 5,761,316; 5,761,317; 5,802,182;
5,805,713; 5,848,165; 6,057,737; 6,411,720; and 6,631,195.
(all available online at www.uspto.gov )
 
In your particular case (power stage/output transformer/loudspeaker
interaction), key information is contained in #4,809,336; 4,995,084 (the
best); 5,133,014; 5,434,536; 5,636,284; 5,761,316; and 5,805,713.

In addition to the above, the following patents contain key information on
simulating the power supply sag: #5,635,872 and #5,909,145.

-------- Original Message --------

> From: "Aaron Wishnick" <schnarf@...>
> Sent: Thursday, September 10, 2009 8:50 AM
> To: music-dsp@...
> Subject: [music-dsp] Vacuum Tube Simulation?
>
> Hi all,
> I'm interested in tube simulation, particularly in the context of  
> guitar playing -- I'm a guitar player. I've seen lots of great papers  
> by David Yeh (check his website) and I feel like I have a good handle  
> on simulating a triode stage. I'm interested to hear what other  
> methods people have found useful for this, though.
>
> Now, I haven't seen any papers on simulating the power amp stage,  
> which is a bit different because there's an extra port on each tube to  
> worry about, and particularly because of the interaction with the  
> transformer. Has anybody seen any papers, or does anybody have  
> suggestions on where to start with this?
>
> Aaron
> --
> dupswapdrop -- the music-dsp mailing list and website:
> subscription info, FAQ, source code archive, list archive, book reviews,

dsp links
> http://music.columbia.edu/cmc/music-dsp 
> http://music.columbia.edu/mailman/listinfo/music-dsp 



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[Thomaz Oliveira-2]

Hi
I'm doing som e research on a electrical engennering institute and I'm
working on the subeject of tube emulations..  we can exchange
materials if you like...

I have some papers here:
do you intend to develop anything?

we can be parterns
I can send you some papers...
I`m also a guitar player as well as a scietist here in brazil

http://www.youtube.com/watch?v=QqDZTQNnalk

cheers

Thomaz
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