* JFET test set
* SPICE version: SpiceOpus (c), version: 2.31
* n-ch bias
*v1 vdd 0 dc 15
* p-ch bias
v1 vdd 0 dc -15
rg 0 vg 100
j1 vdd vg vs 2SJ74SIM 
rbias vs 0 1meg
.MODEL LSK170A NJF
+ BETA   = 0.0378643       VTO    = -0.4025156      LAMBDA = 4.783719E-3        
+ IS     = 3.55773E-14      
+ RD     = 10.6565         RS     = 6.8790487                    
+ CGD    = 3.99E-11        CGS    = 4.06518E-11        
+ PB     = 0.981382        FC     = 0.5                
+ KF     = 0               AF     = 1                                               
*
.MODEL LSK170B NJF
+ BETA   = 0.0350699       VTO    = -0.5375582      LAMBDA = 4.951E-3           
+ IS     = 2.76212E-14
+ RD     = 7.82168         RS     = 6.9525888
+ CGD    = 4.36E-11        CGS    = 4.36E-11           
+ PB     = 1.2             FC     = 0.5                
+ KF     = 0               AF     = 1
*
.MODEL LSK170C NJF          
+ BETA   = 0.0278541       VTO    = -0.800434       LAMBDA = 0.0122435          
+ IS     = 2.45217E-14  
+ RD     = 12              RS     = 5.8             CGD    = 4.22E-11           
+ CGS    = 4.23E-11        PB     = 0.9265487
+ FC     = 0.5             KF     = 0               AF     = 1            
*  
.MODEL 2SJ74SIM PJF
+ BETA   = 0.0378643       VTO    = -0.4025156      LAMBDA = 4.783719E-3        
+ IS     = 3.55773E-14      
+ RD     = 10.6565         RS     = 6.8790487                    
+ CGD    = 3.99E-11        CGS    = 4.06518E-11        
+ PB     = 0.981382        FC     = 0.5                
+ KF     = 0               AF     = 1                                               
*
         
.end
.control
echo alter rbias=1meg
alter rbias=1meg
op
print -vs
echo alter rbias=1k
alter rbias=1k
op
print -vs
.endc