12B4a spice model.

ashok · 24th February 2009, 12:36 PM

Does anyone have a spice model for the tube 12b4A ?
A search didn't produce any results on google or this forum.

Thanks.

revintage · 24th February 2009, 03:32 PM

Something wrong with your Google

?

.subckt 12B4 P G K
Bp P K I=(0.7475666979m)*uramp(V(P,K)*ln(1.0+(-0.03869784353)+exp((5.06748961)+(5.06748961)*((7.7 83573199)+(-7.718521472m)*V(G,K))*V(G,K)/sqrt((16.65965534)**2+(V(P,K)-(1.974437216))**2)))/(5.06748961))**(1.293967904)
.ends 12B4

ashok · 25th February 2009, 03:16 AM

Thanks Lars.
Nothing wrong with Google I guess , so it must be something wrong with the gray cells in my head !

But surprisingly though it came up with several sites I tried a few and didn't find the Spice data and gave up . Maybe I just tried the wrong ones. Maybe I'm getting too old .

Rgds,
Ashok.

Cauhtemoc · 25th February 2009, 05:25 AM

A while back I posted a spice model of the 12B4 based on the work of David Heiser:

Does anyone know of an LTSpice model for 12B4?

revintage · 25th February 2009, 09:51 AM

Checked the Heiser model and it seems to be working OK.

Here is a Ua/Ia sim from LTSpice.

24th February 2009, 12:36 PM	#1
ashok diyAudio Member Join Date: Jun 2002 Location: 3RS	12B4a spice model. Does anyone have a spice model for the tube 12b4A ? A search didn't produce any results on google or this forum. Thanks. __________________ AM

25th February 2009, 03:16 AM	#3
ashok diyAudio Member Join Date: Jun 2002 Location: 3RS	Thanks Lars. Nothing wrong with Google I guess , so it must be something wrong with the gray cells in my head ! But surprisingly though it came up with several sites I tried a few and didn't find the Spice data and gave up . Maybe I just tried the wrong ones. Maybe I'm getting too old . Rgds, Ashok. __________________ AM

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
Help With 6v6 Spice Model	porcatroya	Tubes / Valves	0	5th May 2008 06:41 AM
IXLF19N250A spice model?	jan.didden	Solid State	3	24th January 2007 08:29 AM
SPICE model	Prune	Parts	6	16th October 2004 03:22 PM
Spice model	doigtee	Tubes / Valves	6	12th July 2003 11:42 AM
Spice model for LED?	G	Solid State	5	14th September 2002 03:33 AM

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


	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

24th February 2009, 03:32 PM	#2
revintage diyAudio Member Join Date: May 2007	Something wrong with your Google ? .subckt 12B4 P G K Bp P K I=(0.7475666979m)uramp(V(P,K)ln(1.0+(-0.03869784353)+exp((5.06748961)+(5.06748961)((7.7 83573199)+(-7.718521472m)V(G,K))V(G,K)/sqrt((16.65965534)2+(V(P,K)-(1.974437216))2)))/(5.06748961))*(1.293967904) .ends 12B4

25th February 2009, 05:25 AM	#4
Cauhtemoc diyAudio Member Join Date: Jun 2007	A while back I posted a spice model of the 12B4 based on the work of David Heiser: Does anyone know of an LTSpice model for 12B4?