* 6SN7 Triode PSpice Model * copyright (c) 1998 Mithat Konar -- all rights reserved * Model used: "Improved VT Models for SPICE Simulations," * Norman Koren, Glass Audio 5/96. * Plate parameters determined by computerized optimization, March 26, 1998. * Plate data from http://www.mclink.it/com/audiomatica/sofia/. * Interelectrode capacitances are based on data given for RCA 6SN7-GTA; however, * the reliability of the HF characteristics for this model is probably not * very high. It is likely that that additional complexity will be required * to better model the HF behavior--including the inclusion of heater terminals * in order to explicitly incorporate grid, plate, and cathode to heater * capacitances. And don't forget to add parasitic capacitances of ~0.7 pF * for adjacent pins and ~0.5 pF for others (see Koren's article) as well as for * the effects of a shield (if used). * No guarantees of any kind are made regarding the accuracy or suitability * of any part of this model. Use at your own risk. * * Connections: Plate * | Grid * | | Cathode * | | | .SUBCKT 6SN7 1 2 3 + PARAMS: MU=22.004 EX=1.2128 KG1=1213.7 KP=203.06 KVB=355.09 + RGI=2000 + CCG=2.4P CGP=3.9P CCP=0.7P ; E1 7 0 VALUE= +{V(1,3)/KP*LOG(1+EXP(KP*(1/MU+V(2,3)/SQRT(KVB+V(1,3)*V(1,3)))))} RE1 7 0 1G G1 1 3 VALUE={ (PWR(V(7),EX)+PWRS(V(7), EX))/KG1 } RCP 1 3 1G ; TO AVOID FLOATING NODES IN MU-FOLLOWER C1 2 3 {CCG} ; CATHODE GRID C2 2 1 {CGP} ; GRID-PLATE C3 1 3 {CCP} ; CATHODE-PLATE D3 5 3 DX ; FOR GRID CURRENT R1 2 5 {RGI} ; FOR GRID CURRENT .MODEL DX D(IS=1N RS=1 CJO=10PF TT=1N) .ENDS