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6th February 2006, 04:39 PM  #1 
diyAudio Member

EL504/PL504 spice model
I am looking for these spice model that could work in LTSwitcher CAD, thank you.
Best, a
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10th February 2006, 12:00 AM  #2 
diyAudio Member
Join Date: May 2005
Location: Stittsville, Ontario, Canada

EL504 model
Try this one.
**** * * R McLean 7 February 2006 * * EL504 pentode * parameter extraction, from data sheets, 7 February 2006 * grid current not modeled **** * .SUBCKT EL504 A S G K + PARAMS: Ex=1.36356218017116 Kg1=309.008226941514 Kp=24.0913886609314 Kvb=9.84050855226085 Mu=7.9025411899847 + Exd=1.01472919685363 Kd=92.2849763943327 Ks=0.270652934579086 Kg=0.00189539610643784 + CCG=22.0P CPG1=1.75P CCP=9.0P Eat at 0 Value={limit(0.636*ATAN(limit(V(A,K),0,2000)/KVB),0,1)} ; arctangent shaping Eme me 0 VALUE={PWR(LIMIT(V(A,K),0,2000),EXD)/KD} ; diode line Egs gs 0 VALUE= {V(S,K)/KP*LOG(1+EXP((1/MU+V(G,K)/V(S,K))*KP))} ; effective voltage Egs2 gs2 0 VALUE={(PWR(V(gs),EX)+PWRS(V(gs),EX))/(KG1*0.636)} ; total space current G1 A K VALUE={LIMIT(V(gs2)*V(at),0,V(me))} ; plate current Escrn sc 0 VALUE={KS*V(gs2)*(1.1V(at))} ; reverse arctan shaping for screen current G2 S K VALUE={Limit(V(sc),0,10)*LIMIT(V(S,K),0,10)/10} ; screen current * no grid current data available so comment out the grid current line *G3 G K VALUE={PWR(LIMIT(V(G,K)+1,0,1E6),1.5)*(1.25V(at))*KG} ; grid current C1 G K {CCG} ; CATHODEGRID 1 C2 A G {CPG1} ; GRID 1PLATE C3 A K {CCP} ; CATHODEPLATE .ENDS EL504
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Robert McLean 
10th February 2006, 01:29 PM  #3 
diyAudio Member

Hi Robert,
It works great!!! Thank you very much. Any chance you have a EL509/519 or PL509/519 good as this one Regards, a
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11th February 2006, 09:07 PM  #4 
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Join Date: May 2005
Location: Stittsville, Ontario, Canada

EL509 model
here is a EL509 model you can try
**** * * R McLean 11 February 2006 * * EL509 pentode * parameter extraction, from data sheets, 10 February 2006 * grid current not modeled **** * .SUBCKT EL509 A S G K + PARAMS: Ex=1.30254251632683 Kg1=95.6295743252665 Kp=9.99615840510116 Kvb=37.9209077642428 Mu=10.3695759657906 + Exd=1.01930710584093 Kd=52.271082959232 Ks=0.221606928008962 Kg=0.00189539610643784 + CCG=37.0P CPG1=2.5P CCP=18.5P Eat at 0 Value={limit(0.636*ATAN(limit(V(A,K),0,2000)/KVB),0,1)} ; arctangent shaping Eme me 0 VALUE={PWR(LIMIT(V(A,K),0,2000),EXD)/KD} ; diode line Egs gs 0 VALUE= {V(S,K)/KP*LOG(1+EXP((1/MU+V(G,K)/V(S,K))*KP))} ; effective voltage Egs2 gs2 0 VALUE={(PWR(V(gs),EX)+PWRS(V(gs),EX))/(KG1*0.636)} ; total space current G1 A K VALUE={LIMIT(V(gs2)*V(at),0,V(me))} ; plate current Escrn sc 0 VALUE={KS*V(gs2)*(1.1V(at))} ; reverse arctan shaping for screen current G2 S K VALUE={Limit(V(sc),0,10)*LIMIT(V(S,K),0,10)/10} ; screen current * no grid current data available so comment out the grid current line *G3 G K VALUE={PWR(LIMIT(V(G,K)+1,0,1E6),1.5)*(1.25V(at))*KG} ; grid current C1 G K {CCG} ; CATHODEGRID 1 C2 A G {CPG1} ; GRID 1PLATE C3 A K {CCP} ; CATHODEPLATE .ENDS EL509
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Robert McLean 
13th February 2006, 04:17 PM  #5 
diyAudio Member

Hi Robert,
...and it works, again. Thanks a lot Robert, I owe you one. Best, a
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27th January 2009, 04:37 PM  #6 
diyAudio Member

Hi!
I'm looking for SPICE models of PL504 and PL509 to use with NI Multisim. I tried to use these models in NI Multisim, but did not work. Does Multisim's SPICE language different?
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27th January 2009, 08:28 PM  #7  
diyAudio Member

Quote:
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29th January 2009, 10:15 PM  #8 
diyAudio Member

Hi!
Thanks! Now it's working.
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