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

Vacuum Tube SPICE Models
Vacuum Tube SPICE Models
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 30th November 2013, 05:27 PM   #101
euro21 is offline euro21  Hungary
diyAudio Member
 
Join Date: Sep 2004
Location: Budapest
Vacuum Tube SPICE Models
Quote:
Originally Posted by needtubes View Post
Found some here, but they do not work with my LTSpice generic TRIODE model
Please read this: :: View topic - Drop Down Menus for selecting your tube
  Reply With Quote
Old 30th November 2013, 05:52 PM   #102
Zen Mod is online now Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Vacuum Tube SPICE Models
Quote:
Originally Posted by jazbo8 View Post
Here you go...

....
thank you !
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 30th November 2013, 05:58 PM   #103
jackinnj is online now jackinnj  United States
diyAudio Member
 
jackinnj's Avatar
 
Join Date: Apr 2002
Location: Llanddewi Brefi, NJ
Vacuum Tube SPICE Models
An externally hosted image should be here but it no longer works. Please upload images instead of linking to them to prevent this.
  Reply With Quote
Old 1st December 2013, 01:15 PM   #104
RajkoM is offline RajkoM  Bosnia and Herzegovina
diyAudio Member
 
RajkoM's Avatar
 
Join Date: Feb 2009
To create your own spice model, the first step is the determination of MU from a reliable diagram. Diagram must include Ug=0V curve.
I took Telefunken pentode and triode diagrams just for example.

The formula for calculation is:
MU=(Ua-Ua min) / Ug

For pentode, the line passes through operating point and the END of knee @ Ug = 0V, as you can see.
Attached Images
File Type: jpg Pentode MU.jpg (69.5 KB, 644 views)
File Type: jpg Triode MU.jpg (82.5 KB, 647 views)
  Reply With Quote
Old 1st December 2013, 04:03 PM   #105
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Vacuum Tube SPICE Models
Thanks Raj,
This will allow us to determine mu for the model and then work solely with the other parameters - should make curve fitting a lot easier.

I built a prototype of my new phono stage (the muscovite mini) using a 6Z9P-E pentode in the front end and was gratified at how close the measured performance was compared with the spice model predictions. It even sounds good.. lol (The model is a slightly modified version of the one you gave me, kg2 adjusted to reflect real world screen currents.)
__________________
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
  Reply With Quote
Old 1st December 2013, 05:57 PM   #106
RajkoM is offline RajkoM  Bosnia and Herzegovina
diyAudio Member
 
RajkoM's Avatar
 
Join Date: Feb 2009
Quote:
Originally Posted by kevinkr View Post
Thanks Raj,
This will allow us to determine mu for the model and then work solely with the other parameters - should make curve fitting a lot easier.

I built a prototype of my new phono stage (the muscovite mini) using a 6Z9P-E pentode in the front end and was gratified at how close the measured performance was compared with the spice model predictions. It even sounds good.. lol (The model is a slightly modified version of the one you gave me, kg2 adjusted to reflect real world screen currents.)

I saw, nice.
I know a few DIYers who use E180F in RIAA preamp.
One of them has E180F in pentode mode as input, and E180F triode mode on output (LED bias, CCS mu-out). He is very happy with sound. I adapted the Russian Teflon capacitors for his RIAA RC network. Simply unwrapped AL/Teflon foils to the required value. See atach.
Attached Images
File Type: jpg Teflon RIAA caps.jpg (49.4 KB, 657 views)
  Reply With Quote
Old 2nd December 2013, 02:01 PM   #107
Zen Mod is online now Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Vacuum Tube SPICE Models
well , I'm dumb .... but that's hardly anything new .....

what I'm doing wrong ?

current from PSU to tube is 8A , but I'm still puzzled where is it going
Attached Files
File Type: zip RS1003-Test.zip (4.4 KB, 75 views)
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 2nd December 2013, 02:43 PM   #108
RajkoM is offline RajkoM  Bosnia and Herzegovina
diyAudio Member
 
RajkoM's Avatar
 
Join Date: Feb 2009
Quote:
Originally Posted by Zen Mod View Post
well , I'm dumb .... but that's hardly anything new .....

what I'm doing wrong ?

current from PSU to tube is 8A , but I'm still puzzled where is it going

Kad tvoj atas proslijedim u LTspice, sve je korektno. Radna tacka: 395V/99,4mA/-11,93V,
Tako da trenutno ne bih znao.

translation:
When your atach I put in LTspice everything works correctly.
So currently I do not know ....
  Reply With Quote
Old 2nd December 2013, 02:47 PM   #109
RajkoM is offline RajkoM  Bosnia and Herzegovina
diyAudio Member
 
RajkoM's Avatar
 
Join Date: Feb 2009
I think I know what it is. In Ayumis model put to be A G K, not P G K.

It should be like this:

. Subckt SRS511_T A G K


syntax, a common problem in LT spice
  Reply With Quote
Old 2nd December 2013, 03:37 PM   #110
Zen Mod is online now Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Vacuum Tube SPICE Models
tnx Rajko

can you zip and attach here functional sim , along with all needed files ?

even when I change that line ( as you wrote in #109) there is something wrong

I know , main problem is still - short circuit between headphones of operator
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote

Reply


Vacuum Tube SPICE ModelsHide 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
Vacuum tubes SPICE models, another way Dominique_free Software Tools 2 12th November 2013 06:26 PM
Tube spice models nhuwar Tubes / Valves 45 25th November 2011 08:47 AM
Computer program for tube curves and Spice models Jim Tonne Software Tools 9 21st November 2010 10:10 AM
Got my tube spice models, and tubed CD player page back on the air wa2ise Tubes / Valves 2 20th April 2008 11:07 PM


New To Site? Need Help?

All times are GMT. The time now is 09:14 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki