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13th November 2018, 03:23 PM  #1831 
diyAudio Member
Join Date: Apr 2013

Don't find sufficient data for RES964, use close substitute E443H instead.
Code:
**** E443H ****************************************** * Created on 11/13/2018 23:18 using paint_kip.jar * www.dmitrynizh.com/tubeparams_image.htm * Plate Curves image file: e443h.png * Data source link: <plate curves URL> * .SUBCKT E443H P G2 G K ; LTSpice tetrode.asy pinout * .SUBCKT E443H P G K G2 ; Koren Pentode Pspice pinout + PARAMS: MU=8.001 KG1=3737.41 KP=51.11 KVB=10.8 VCT=0 EX=1.338 KG2=11692.8 KNEE=23.63 KVC=1.619 + KLAM=1.08E7 KLAMG=3.587E4 KNK=0.044 KNG=0.006 KNPL=50 KNSL=11 KNPR=120 KNSR=29 + CCG=3P CGP=1.4P CCP=1.9P RGI=2000.0 * Vp_MAX=550 Ip_MAX=80 Vg_step=2 Vg_start=0 Vg_count=17 * X_MIN=41 Y_MIN=45 X_SIZE=976 Y_SIZE=716 FSZ_X=1550 FSZ_Y=878 XYGrid=false * Rp=1400 Vg_ac=20 P_max=9 Vg_qui=16 Vp_qui=300 * showLoadLine=n showIp=y isDHP=n isPP=n isAsymPP=n isUL=n showDissipLimit=y * showIg1=n isInputSnapped=y addLocalNFB=n * XYProjections=n harmonicPlot=y dissipPlot=n * UL=0.43 EG2=250 gridLevel2=n addKink=y isTanhKnee=n advSigmoid=n * RE1 7 0 1G ; DUMMY SO NODE 7 HAS 2 CONNECTIONS E1 7 0 VALUE= ; E1 BREAKS UP LONG EQUATION FOR G1. +{V(G2,K)/KP*LOG(1+EXP((1/MU+(VCT+V(G,K))/SQRT(KVB+V(G2,K)*V(G2,K)))*KP))} RE2 6 0 1G ; DUMMY SO NODE 6 HAS 2 CONNECTIONS E2 6 0 VALUE={(PWR(V(7),EX)+PWRS(V(7),EX))} ; Kg1 times KIT current RE21 21 0 1 E21 21 0 VALUE={V(6)/KG1*ATAN(V(P,K)/KNEE)} ; Ip with knee but no slope and no kink RE22 22 0 1 ; E22: kink curr deviation for plate E22 22 0 VALUE={V(21)*LIMIT(KNKV(G,K)*KNG,0,0.3)*(ATAN((V(P,K)KNPL)/KNSL)+ATAN((V(P,K)KNPR)/KNSR))} G1 P K VALUE={V(21)*(1+KLAMG*V(P,K))+KLAM*V(P,K) + V(22)} * Alexander Gurskii screen current, see audioXpress 2/2011, with slope and kink added RE43 43 K 1G ; Dummy E43 43 G2 VALUE={0} ; Dummy G2 43 K VALUE={V(6)/KG2*(KVCATAN(V(P,K)/KNEE))/(1+KLAMG*V(P,K))V(22)} RCP P K 1G ; FOR CONVERGENCE C1 K G {CCG} ; CATHODEGRID 1 C2 G P {CGP} ; GRID 1PLATE C3 K P {CCP} ; CATHODEPLATE R1 G 5 {RGI} ; FOR GRID CURRENT D3 5 K DX ; FOR GRID CURRENT } .MODEL DX D(IS=1N RS=1 CJO=10PF TT=1N) .ENDS *$ * The following triode model is derived from pentode model, see above. * In the triode model, all spice parameters come directly from the pentode model, except for Kg1, * which for triodestrapped pentodes is derived from pentode's Kg1, Kg2 and Kvc as * * 4Kg1Kg2 / ((2KvcPi)(2Kg1+PiKg2)) **** E443H ****************************************** * Created on 11/13/2018 23:18 using paint_kit.jar 4.7 * www.dmitrynizh.com/tubeparams_image.htm * Plate Curves image file: e443h.png * Data source link: <plate curves URL> * .SUBCKT TRIODE_E443H 1 2 3 ; Plate Grid Cathode + PARAMS: CCG=3P CGP=1.4P CCP=1.9P RGI=2000 + MU=8.001 KG1=41016.82 KP=51.11 KVB=10.8 VCT=0 EX=1.338 * Vp_MAX=550 Ip_MAX=80 Vg_step=2 Vg_start=0 Vg_count=17 * Rp=1400 Vg_ac=20 P_max=9 Vg_qui=16 Vp_qui=300 * X_MIN=41 Y_MIN=45 X_SIZE=976 Y_SIZE=716 FSZ_X=1550 FSZ_Y=878 XYGrid=false * showLoadLine=n showIp=y isDHT=n isPP=n isAsymPP=n showDissipLimit=y * showIg1=n gridLevel2=n isInputSnapped=y * XYProjections=n harmonicPlot=y dissipPlot=n * E1 7 0 VALUE={V(1,3)/KP*LOG(1+EXP(KP*(1/MU+(VCT+V(2,3))/SQRT(KVB+V(1,3)*V(1,3)))))} RE1 7 0 1G ; TO AVOID FLOATING NODES G1 1 3 VALUE={(PWR(V(7),EX)+PWRS(V(7),EX))/KG1} RCP 1 3 1G ; TO AVOID FLOATING NODES C1 2 3 {CCG} ; CATHODEGRID C2 2 1 {CGP} ; GRID=PLATE C3 1 3 {CCP} ; CATHODEPLATE D3 5 3 DX ; POSITIVE GRID CURRENT R1 2 5 {RGI} ; POSITIVE GRID CURRENT .MODEL DX D(IS=1N RS=1 CJO=10PF TT=1N) .ENDS *$ 
13th November 2018, 08:39 PM  #1832 
diyAudio Member
Join Date: Oct 2010
Location: Traslasierra

Hi everyone
I am looking for a model of Electro Harmonix 6922. It is said out there that the 6N23P is the same, but the only model available is inaccurate, its iv curves are more like Siemens E88CC/6922. Thanks in advance.
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I do not suffer from insanity, I enjoy every minute of it.  Edgar Allan Poe He has the most who is most content with the least.  Diogenes of Sinope 
Yesterday, 12:12 AM  #1833 
diyAudio Member
Join Date: Jul 2003
Location: Wayne, West Virginia

I made model from a set of curves that are supposedly for a 6922EH that compare to a set for for a 6N23P that I have. Who knows...
I made a comparison in LTspice in the image below. U1 = Philips E88CC U2 = Supposed 6922EH U3 = 6N23P from Soviet data sheet. Code:
* 6922EH LTSpice model * Modified Koren model (8 parameters) mean fit error 0.20198mA * Traced by Wayne Clay on 05/29/2016 using Curve Captor v0.9.1 * and Engauge Digitizer .subckt 6922EH P G K Bp P K I= + (0.08061132734m)*uramp(V(P,K)*ln(1.0+(0.03708608981)+exp((3.87608812)+ + (3.87608812)*((31.88733765)+(1070.482271m)*V(G,K))*V(G,K)/sqrt((22.6657093)**2+ + (V(P,K)(4.717434742))**2)))/(3.87608812))**(1.322643185) Cgp G P 2.2p ; 0.7p added (1.5p) Cgk G K 4.2p ; 0.7p added (3.5p) Cpk P K 2.2p ; 0.2p added (2.0p) 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 6922EH Code:
* ============================================================== * 6N23P LTSpice model * Modified Koren model (8 parameters): mean fit error 0.182649mA * Traced by Wayne Clay on 08/22/2018 using Curve Captor v0.9.1 * and Engauge Digitizer from Soviet data sheet * ============================================================== .subckt 6N23P P G K Bp P K I= + (0.09199263401m)*uramp(V(P,K)*ln(1.0+(0.04545642112)+exp((4.06290859)+ + (4.06290859)*((30.26769611)+(1093.389027m)*V(G,K))*V(G,K)/sqrt((29.02430003)**2+ + (V(P,K)(11.49369847))**2)))/(4.06290859))**(1.290098711) Cgp G P 2.3p ; 0.7p added (1.6p) Cgk G K 4.3p ; 0.7p added (3.6p) Cpk P K 2.3p ; 0.2p added (2.1p) Rpk P K 1.0G ; to avoid floating nodes in mufollower d3 G K dx1 .model dx1 d(is=1n rs=2k cjo=1pf N=1.5 tt=1n) .ends 6N23P
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Yesterday, 01:19 AM  #1834 
diyAudio Member
Join Date: Oct 2010
Location: Traslasierra

Hi Wayne! You are still the master!
Thanks a lot!
__________________
I do not suffer from insanity, I enjoy every minute of it.  Edgar Allan Poe He has the most who is most content with the least.  Diogenes of Sinope 
Yesterday, 04:04 AM  #1835  
diyAudio Member
Join Date: Apr 2013

Quote:
Last edited by Koonw; Yesterday at 04:30 AM. 

Yesterday, 02:42 PM  #1836 
diyAudio Member
Join Date: Oct 2010
Location: Traslasierra

Both models are very close, maybe the 6922EH is based on the 6N23P or is the same valve.
The 6N23P model from post#1833 is far better than the one available on Russian forums.
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I do not suffer from insanity, I enjoy every minute of it.  Edgar Allan Poe He has the most who is most content with the least.  Diogenes of Sinope 
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