Vacuum Tube SPICE Models

EL8 · 2016-12-31 2:56 pm

Thanks cogsncogs, will try it later.

Happy New Year everybody

Triodenklaus · 2017-01-02 11:04 am

hi all,

i am looking for good LTspice model for the DHT type 26.???
Can someone help??

BR

jazbo8 · 2017-01-02 11:12 am

Type 26 SPICE Model

Code:

*
* Generic triode model: 26_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Sat Feb 14 06:09:00 2015
*             Plate
*             | Grid
*             | | Cathode
*             | | |
.SUBCKT 26_AN A G K
BGG   GG   0 V=V(G,K)+0.5460007
BM1   M1   0 V=(0.018110138*(URAMP(V(A,K))+1e-10))**-0.2396723
BM2   M2   0 V=(0.86223135*(URAMP(V(GG)+URAMP(V(A,K))/7.6072668)+1e-10))**1.7396723
BP    P    0 V=0.00027709332*(URAMP(V(GG)+URAMP(V(A,K))/8.8227676)+1e-10)**1.5
BIK   IK   0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.00017853914*V(M1)*V(M2)
BIG   IG   0 V=0.00013854666*URAMP(V(G,K))**1.5*(URAMP(V(G,K))/(URAMP(V(A,K))+URAMP(V(G,K)))*1.2+0.4)
BIAK  A    K I=URAMP(V(IK,IG)-URAMP(V(IK,IG)-(0.00018696729*URAMP(V(A,K))**1.5)))+1e-10*V(A,K)
BIGK  G    K I=V(IG)
* CAPS
CGA   G    A 8.1p
CGK   G    K 3.5p
CAK   A    K 2.2p
.ENDS

Triodenklaus · 2017-01-02 11:27 am

Very NICE Thanks

BR from Germany

EL8 · 2017-01-04 5:00 am

cogsncogs said:
May be a floating point error...

Hi cogsncogs, After test the model still does not in the PSpice.

ygg-it · 2017-01-06 7:56 am

Need KT77 in a triode mode

Hello , I would need a KT77 LTspice model, but working in triode mode.

Can someone build this for me? :worship:

Thanks
GG

jazbo8 · 2017-01-06 8:50 am

KT77 SPICE Models

Beam Tetrode SPICE Model:

Code:

*
* Generic pentode model: KT77_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Fri Jan 06 09:44:09 2017
*               Anode
*               | Screen Grid
*               | |  Control Grid
*               | |  |  Cathode
*               | |  |  |
.SUBCKT KT77_AN A G2 G1 K
BGG   GG   0 V=V(G1,K)+0.99969437
BM1   M1   0 V=(0.01275965*(URAMP(V(G2,K))+1e-10))**-0.23213508
BM2   M2   0 V=(0.86598327*(URAMP(V(GG)+URAMP(V(G2,K))/10.503167)))**1.7321351
BP    P    0 V=0.0024912955*(URAMP(V(GG)+URAMP(V(G2,K))/12.128603))**1.5
BIK   IK   0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.0016155279*V(M1)*V(M2)
BIG   IG   0 V=0.0012456477*URAMP(V(G1,K))**1.5*(URAMP(V(G1,K))/(URAMP(V(A,K))+URAMP(V(G1,K)))*1.2+0.4)
BIK2  IK2  0 V=V(IK,IG)*(1-0.4*(EXP(-URAMP(V(A,K))/URAMP(V(G2,K))*15)-EXP(-15)))
BIG2T IG2T 0 V=V(IK2)*(0.916000233*(1-URAMP(V(A,K))/(URAMP(V(A,K))+10))**1.5+0.083999767)
BIK3  IK3  0 V=V(IK2)*(URAMP(V(A,K))+4250)/(URAMP(V(G2,K))+4250)
BIK4  IK4  0 V=V(IK3)-URAMP(V(IK3)-(0.0015600239*(URAMP(V(A,K))+URAMP(URAMP(V(G2,K))-URAMP(V(A,K))))**1.5))
BIP   IP   0 V=URAMP(V(IK4,IG2T)-URAMP(V(IK4,IG2T)-(0.0015600239*URAMP(V(A,K))**1.5)))
BIAK  A    K I=V(IP)+1e-10*V(A,K)
BIG2  G2   K I=URAMP(V(IK4,IP))
BIGK  G1   K I=V(IG)
* CAPS
CGA   G1  A  1p
CGK   G1  K  10.2p
C12   G1  G2 6.8p
CAK   A   K  9p
.ENDS

Triode-Connected SPICE Model:

Code:

*
* Generic triode model: KT77_T_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Fri Jan 06 09:43:42 2017
*                 Anode
*                 | Grid
*                 | | Cathode
*                 | | |
.SUBCKT KT77_T_AN A G K
BGG   GG   0 V=V(G,K)+0.99969437
BM1   M1   0 V=(0.01275965*(URAMP(V(A,K))+1e-10))**-0.23213508
BM2   M2   0 V=(0.86598327*(URAMP(V(GG)+URAMP(V(A,K))/10.503167)+1e-10))**1.7321351
BP    P    0 V=0.0024912955*(URAMP(V(GG)+URAMP(V(A,K))/12.128603)+1e-10)**1.5
BIK   IK   0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.0016155279*V(M1)*V(M2)
BIG   IG   0 V=0.0012456477*URAMP(V(G,K))**1.5*(URAMP(V(G,K))/(URAMP(V(A,K))+URAMP(V(G,K)))*1.2+0.4)
BIAK  A    K I=URAMP(V(IK,IG)-URAMP(V(IK,IG)-(0.0015600239*URAMP(V(A,K))**1.5)))+1e-10*V(A,K)
BIGK  G    K I=V(IG)
* CAPS
CGA   G    A 1p
CGK   G    K 17p
CAK   A    K 9p
.ENDS

ygg-it · 2017-01-06 9:38 am

Thanks!!!

Can I connect the first model in UL? Doeas the model work the same?

jazbo8 · 2017-01-06 9:40 am

You are welcome, and yes, the beam tetrode model works with an UL connection.

ygg-it · 2017-01-06 12:45 pm

The most reliable 12AX7 LTspice model

Hello, I've found several models of 12AX7/ECC83 over internet.

Which is the most reliable you ever found? Can you please post here the best?

jazbo8 · 2017-01-06 4:26 pm

Try searching this thread, I think cogsncogs made one that's quite accurate - better than Ayumi's version.

cogsncogs · 2017-01-08 4:47 pm

12AX7A/ECC83 model

ygg-it said:
Hello, I've found several models of 12AX7/ECC83 over internet.

Which is the most reliable you ever found? Can you please post here the best?

Don't know about the "best", but it's close...

Code:

* ==============================================================
* 12AX7A-mz LTSpice model
* Rydel model (5 parameters): mean fit error 0.0364781mA
* Traced by Wayne Clay on 10/01/2006 using Curve Captor v0.9.1
* from Mazda Belvu data sheet
* ==============================================================
.subckt 12AX7A-mz  P G K
  Bp  P K  I=((0.001162961073m)+(0.0001179305949m)*V(G,K))*uramp
+ ((89.27317344)*V(G,K)+V(P,K)+(50.06656412))**1.5 * V(P,K)/(V(P,K)+(1.191219264))
  Cgk G K 2.3p ; 0.7p added (1.6p)
  Cgp G P 2.3p ; 0.7p added (1.6p)
  Cpk P K 0.53p ; 0.2p added (0.33p)
  Rpk P K 1G ; to avoid floating nodes
  d3  G K dx1
.model dx1 d(is=1n rs=2k cjo=1pf N=1.5 tt=1n)
.ends 12AX7A-mz

RajkoM · 2017-01-17 12:26 pm

If someone needs triode curves of E83F, here are (page 477).
Great tube, btw.

http://pessina.mib.infn.it/WOLTE2014/gatti/Gatti il nuovo cimento V 3 p 473 1956 .pdf

211hojbjerg · 2017-01-18 10:06 am

Hi All,
I'm looking for a pentode model of a PL802/EL802.

Best
Karsten

jazbo8 · 2017-01-20 9:32 am

PL802 SPICE Model

A bit crude, but should work, try and stay away from low bias...

Code:

*
* Generic pentode model: PL802_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Fri Jan 20 10:26:10 2017
*                Anode
*                | Screen Grid
*                | |  Control Grid
*                | |  |  Cathode
*                | |  |  |
.SUBCKT PL802_AN A G2 G1 K
BGG   GG   0 V=V(G1,K)+0.003190568
BM1   M1   0 V=(0.0054900589*(URAMP(V(G2,K))+1e-10))**-0.66524575
BM2   M2   0 V=(0.69276201*(URAMP(V(GG)+URAMP(V(G2,K))/55.962604)))**2.1652458
BP    P    0 V=0.040273246*(URAMP(V(GG)+URAMP(V(G2,K))/80.78186))**1.5
BIK   IK   0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.023448349*V(M1)*V(M2)
BIG   IG   0 V=0.020136623*URAMP(V(G1,K))**1.5*(URAMP(V(G1,K))/(URAMP(V(A,K))+URAMP(V(G1,K)))*1.2+0.4)
BIK2  IK2  0 V=V(IK,IG)*(1-0.4*(EXP(-URAMP(V(A,K))/URAMP(V(G2,K))*15)-EXP(-15)))
BIG2T IG2T 0 V=V(IK2)*(0.83282327*(1-URAMP(V(A,K))/(URAMP(V(A,K))+10))**1.5+0.16717673)
BIK3  IK3  0 V=V(IK2)*(URAMP(V(A,K))+3430)/(URAMP(V(G2,K))+3430)
BIK4  IK4  0 V=V(IK3)-URAMP(V(IK3)-(0.020886747*(URAMP(V(A,K))+URAMP(URAMP(V(G2,K))-URAMP(V(A,K))))**1.5))
BIP   IP   0 V=URAMP(V(IK4,IG2T)-URAMP(V(IK4,IG2T)-(0.020886747*URAMP(V(A,K))**1.5)))
BIAK  A    K I=V(IP)+1e-10*V(A,K)
BIG2  G2   K I=URAMP(V(IK4,IP))
BIGK  G1   K I=V(IG)
* CAPS
CGA   G1  A  0.075p
CGK   G1  K  12p
C12   G1  G2 8p
CAK   A   K  4p
.ENDS

n4pum · 2017-01-20 3:16 pm

6JE6C/6LQ6/6JM6 best fit model

A little tweet on EL509 model seems to work the data shows it fits. Modeling an old SBE SB1/2-LA HF sweep tube Linear Amplifier. LTSpice fun project to look at.

ygg-it · 2017-01-27 1:15 pm

jazbo8 said:

Beam Tetrode SPICE Model:

Code:

*
* Generic pentode model: KT77_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Fri Jan 06 09:44:09 2017
*               Anode
*               | Screen Grid
*               | |  Control Grid
*               | |  |  Cathode
*               | |  |  |
.SUBCKT KT77_AN A G2 G1 K
BGG   GG   0 V=V(G1,K)+0.99969437
BM1   M1   0 V=(0.01275965*(URAMP(V(G2,K))+1e-10))**-0.23213508
BM2   M2   0 V=(0.86598327*(URAMP(V(GG)+URAMP(V(G2,K))/10.503167)))**1.7321351
BP    P    0 V=0.0024912955*(URAMP(V(GG)+URAMP(V(G2,K))/12.128603))**1.5
BIK   IK   0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.0016155279*V(M1)*V(M2)
BIG   IG   0 V=0.0012456477*URAMP(V(G1,K))**1.5*(URAMP(V(G1,K))/(URAMP(V(A,K))+URAMP(V(G1,K)))*1.2+0.4)
BIK2  IK2  0 V=V(IK,IG)*(1-0.4*(EXP(-URAMP(V(A,K))/URAMP(V(G2,K))*15)-EXP(-15)))
BIG2T IG2T 0 V=V(IK2)*(0.916000233*(1-URAMP(V(A,K))/(URAMP(V(A,K))+10))**1.5+0.083999767)
BIK3  IK3  0 V=V(IK2)*(URAMP(V(A,K))+4250)/(URAMP(V(G2,K))+4250)
BIK4  IK4  0 V=V(IK3)-URAMP(V(IK3)-(0.0015600239*(URAMP(V(A,K))+URAMP(URAMP(V(G2,K))-URAMP(V(A,K))))**1.5))
BIP   IP   0 V=URAMP(V(IK4,IG2T)-URAMP(V(IK4,IG2T)-(0.0015600239*URAMP(V(A,K))**1.5)))
BIAK  A    K I=V(IP)+1e-10*V(A,K)
BIG2  G2   K I=URAMP(V(IK4,IP))
BIGK  G1   K I=V(IG)
* CAPS
CGA   G1  A  1p
CGK   G1  K  10.2p
C12   G1  G2 6.8p
CAK   A   K  9p
.ENDS

Triode-Connected SPICE Model:

Code:

*
* Generic triode model: KT77_T_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Fri Jan 06 09:43:42 2017
*                 Anode
*                 | Grid
*                 | | Cathode
*                 | | |
.SUBCKT KT77_T_AN A G K
BGG   GG   0 V=V(G,K)+0.99969437
BM1   M1   0 V=(0.01275965*(URAMP(V(A,K))+1e-10))**-0.23213508
BM2   M2   0 V=(0.86598327*(URAMP(V(GG)+URAMP(V(A,K))/10.503167)+1e-10))**1.7321351
BP    P    0 V=0.0024912955*(URAMP(V(GG)+URAMP(V(A,K))/12.128603)+1e-10)**1.5
BIK   IK   0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.0016155279*V(M1)*V(M2)
BIG   IG   0 V=0.0012456477*URAMP(V(G,K))**1.5*(URAMP(V(G,K))/(URAMP(V(A,K))+URAMP(V(G,K)))*1.2+0.4)
BIAK  A    K I=URAMP(V(IK,IG)-URAMP(V(IK,IG)-(0.0015600239*URAMP(V(A,K))**1.5)))+1e-10*V(A,K)
BIGK  G    K I=V(IG)
* CAPS
CGA   G    A 1p
CGK   G    K 17p
CAK   A    K 9p
.ENDS

Hi, can I use the penthode KT77_AN model in a triode connection? I saw it works pretty well also in triode design in LTspice!

Or is it only reccomended to use the KT77_T_AN for the triode connection?
Thanks!

jazbo8 · 2017-01-27 1:32 pm

Either one will work, depending on which symbol you want to use in the simulation.

tbarnettsgf · 2017-01-28 9:21 pm

Does anyone have a model for Pentode 6jn6?

http://www.mif.pg.gda.pl/homepages/frank/sheets/123/6/6JN6.pdf

jazbo8 · 2017-01-29 7:02 am

See LTspice model needed....6JN6 - diyAudio

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