* KT88 Beam Power Tube PSpice Model              8/96, Rev. 1.0  (fp)
*
* -------------------------------------------------------------------
*  This model is provided "as is", with no warranty of any kind,
*  either expressed or implied, about the suitability or fitness
*  of this model for any particular purpose.  Use of this model
*  shall be entirely at the user's own risk.
*
*  For a discussion about vacuum tube modeling please refer to:
*  W. Marshall Leach, jr: "SPICE Models for Vacuum-Tube Amplifiers";
*  J. Audio Eng. Soc., Vol 43, No 3, March 1995.
* -------------------------------------------------------------------
*
* This model is valid for the following tubes (within max. ratings):
*                   KT88       6550.
* --------------+-----------------------
* Plate Dissip. :    35W        35W
* Screen Input  :     6W         6W
* Plate Voltage :   800V       600V
* Screen Voltage:   600V       400V
*
* at the following conditions:
*  Plate voltage  : 0..800V
*  Screen voltage : 0..600V
*  Grid voltage   : 0..-60V
*  Cathode current: 0..500mA
*
*
* Connections: Plate
*              | Screen Grid
*              | | Control Grid
*              | | | Cathode
*              | | | |
.SUBCKT   KT88 P S G K
Esp 2  0  VALUE={V(P,K)+24.49*V(S,K)+189.9*V(G,K)}
E1  3  2  VALUE={8.301E-7*(PWR(V(2),1.5)+PWRS(V(2),1.5))/2}
E2  3  4  VALUE={8.301 E-7*PWR(24.49*V(S,K),1.5)*V(P,K)/40}
E3  5  4  VALUE={(1-V(4,2)/ABS(V(4,2)+0.001))/2}
R1  5  0  1.0K
Gk  S  K  VALUE={V(3,2)}
Gp  P  S  VALUE={0.95*(V(3,4)*(1-V(5,4))+V(3,2)*V(5,4))}
Cgk G  K  8.0P
Cgs G  S  8.0P
Cgp G  P  1.2P
Cpk P  K  12P
.ENDS KT88