Before i forget the complete topic on this can be found http://www.diyaudio.com/forums/tubes-valves/181578-spice-transformer-model-spreadsheet.html
I just lookt at the model i have it seems that i forgot to change one of the ^ to ** my bad
Now it's workin
Now it's workin
Code:
*
* Generic pentode model: GU50_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Sat Jan 11 08:13:44 2014
* Plate
* | Screen Grid
* | | Control Grid
* | | | Cathode
* | | | |
.SUBCKT GU50_AN A G2 G1 K
BGG GG 0 V=V(G1,K)+0.45288699
BM1 M1 0 V=(0.10715305*(URAMP(V(G2,K))+1e-10))**-1.1401545
BM2 M2 0 V=(0.56814856*(URAMP(V(GG)+URAMP(V(G2,K))/4.0302301)))**2.6401545
BP P 0 V=0.0015719333*(URAMP(V(GG)+URAMP(V(G2,K))/7.0936201))**1.5
BIK IK 0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.0011497682*V(M1)*V(M2)
BIG IG 0 V=0.00078596663*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))+2101.25)/(URAMP(V(G2,K))+2101.25)
BIK4 IK4 0 V=V(IK3)-URAMP(V(IK3)-(0.0011298169*(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)-(0.0011298169*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 0.1p
CGK G1 K 8.4p
C12 G1 G2 5.6p
CAK A K 9.2p
.ENDS GU50_AN
jazbo,
I looked at the LTspice schematic and see that there are two version of the GU50 pentode model. I assume the one with the underscore (GU50_P) is for LTspice and the other one (GU50P) is for another simulator. If this is correct, can you provide an LTspice model for the triode-connected GU50? The GU50T model appears to be for the "other" simulator.
Thanks.
Ray
I looked at the LTspice schematic and see that there are two version of the GU50 pentode model. I assume the one with the underscore (GU50_P) is for LTspice and the other one (GU50P) is for another simulator. If this is correct, can you provide an LTspice model for the triode-connected GU50? The GU50T model appears to be for the "other" simulator.
Thanks.
Ray
Revised Ayumi GU50 Triode Model
If you mean the file uploaded by RajkoM, then yes, you should discard all of the Ayumi models in that file, as none of them is considered accurate. I made a new triode-strapped model for the GU50 as follows:
I will try to make a new one for the pentode when I get a chance.
If you mean the file uploaded by RajkoM, then yes, you should discard all of the Ayumi models in that file, as none of them is considered accurate. I made a new triode-strapped model for the GU50 as follows:
Code:
*
* Generic triode model: GU50T_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Thu Dec 04 06:55:48 2014
* Plate
* | Grid
* | | Cathode
* | | |
.SUBCKT GU50T_AN A G K
BGG GG 0 V=V(G,K)+0.99999998
BM1 M1 0 V=(0.10436399*(URAMP(V(A,K))+1e-10))**-0.94152684
BM2 M2 0 V=(0.61436966*(URAMP(V(GG)+URAMP(V(A,K))/3.6950516)+1e-10))**2.4415268
BP P 0 V=0.00094208742*(URAMP(V(GG)+URAMP(V(A,K))/6.0143784)+1e-10)**1.5
BIK IK 0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.00060765818*V(M1)*V(M2)
BIG IG 0 V=0.00047104371*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)-(0.00071551401*URAMP(V(A,K))**1.5)))+1e-10*V(A,K)
BIGK G K I=V(IG)
* CAPS
CGA G A 0.1p
CGK G K 14p
CAK A K 9.2p
.ENDS
I will try to make a new one for the pentode when I get a chance.
ECL86 = 6GW8 and is included in the Ayumi library.I'm looking for a LTSpice model for the P(E)CL86
I will try to make a new one for the pentode when I get a chance.
Thanks!
You are right, Ayumi only made the pentode and triode-strapped pentode models. I will try to make one for triode soon.I found the pentode part of the 6gw8 however the triode part that's in the lib looks like the pentode as triode so i'm still looking for the triode part of the PCL86 ( 6GW8 )
Hmm. In Ayumi library which I have, there is a pure triode model. Works perfectly with triode sym:
* Generic triode model: 6GW8PT
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Sat Mar 8 22:40:12 2008
* Plate
* | Grid
* | | Cathode
* | | |
.SUBCKT 6GW8PT A G K
BGG GG 0 V=V(G,K)+0.84112562
BM1 M1 0 V=(0.01029284*(URAMP(V(A,K))+1e-10))**-0.37211195
BM2 M2 0 V=(0.80123414*(URAMP(V(GG)+URAMP(V(A,K))/19.311081)+1e-10))**1.872112
BP P 0 V=0.0043151181*(URAMP(V(GG)+URAMP(V(A,K))/24.10167)+1e-10)**1.5
BIK IK 0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.0025686773*V(M1)*V(M2)
BIG IG 0 V=0.0021575591*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)-(0.002428883*URAMP(V(A,K))**1.5)))+1e-10*V(A,K)
BIGK G K I=V(IG)
* CAPS
CGA G A 4.2p
CGK G K 5.8p
CAK A K 7.6p
.ENDS
* Generic triode model: 6GW8PT
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Sat Mar 8 22:40:12 2008
* Plate
* | Grid
* | | Cathode
* | | |
.SUBCKT 6GW8PT A G K
BGG GG 0 V=V(G,K)+0.84112562
BM1 M1 0 V=(0.01029284*(URAMP(V(A,K))+1e-10))**-0.37211195
BM2 M2 0 V=(0.80123414*(URAMP(V(GG)+URAMP(V(A,K))/19.311081)+1e-10))**1.872112
BP P 0 V=0.0043151181*(URAMP(V(GG)+URAMP(V(A,K))/24.10167)+1e-10)**1.5
BIK IK 0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.0025686773*V(M1)*V(M2)
BIG IG 0 V=0.0021575591*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)-(0.002428883*URAMP(V(A,K))**1.5)))+1e-10*V(A,K)
BIGK G K I=V(IG)
* CAPS
CGA G A 4.2p
CGK G K 5.8p
CAK A K 7.6p
.ENDS
ECL86_6GW8 Triode Section Model
Well, that's the triode-strapped pentode model, try comparing it to the curves from the triode section, they won't match up... Then try this one for the triode section:Hmm. In Ayumi library which I have, there is a pure triode model. Works perfectly with triode sym:
Code:
*
* Generic triode model: ECL86T_AN
* Copyright 2003--2008 by Ayumi Nakabayashi, All rights reserved.
* Version 3.10, Generated on Tue Dec 23 17:15:39 2014
* Plate
* | Grid
* | | Cathode
* | | |
.SUBCKT ECL86T_AN A G K
BGG GG 0 V=V(G,K)+0.56606473
BM1 M1 0 V=(0.0020906314*(URAMP(V(A,K))+1e-10))**-0.32938621
BM2 M2 0 V=(0.81994714*(URAMP(V(GG)+URAMP(V(A,K))/86.123674)+1e-10))**1.8293862
BP P 0 V=0.0010401382*(URAMP(V(GG)+URAMP(V(A,K))/105.03564)+1e-10)**1.5
BIK IK 0 V=U(V(GG))*V(P)+(1-U(V(GG)))*0.00063128844*V(M1)*V(M2)
BIG IG 0 V=0.00052006911*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)-(0.00053495848*URAMP(V(A,K))**1.5)))+1e-10*V(A,K)
BIGK G K I=V(IG)
* CAPS
CGA G A 1.4p
CGK G K 2.3p
CAK A K 2.5p
.ENDS
Last edited:
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