Version 4
SHEET 1 1604 680
WIRE 432 -48 432 -80
WIRE 432 48 432 32
WIRE 432 192 432 128
WIRE 432 304 432 272
WIRE 432 320 432 304
WIRE 496 -80 432 -80
WIRE 512 128 432 128
WIRE 672 128 512 128
WIRE 720 -80 496 -80
WIRE 720 80 720 -80
WIRE 720 304 432 304
WIRE 720 304 720 176
WIRE 1248 160 1216 160
WIRE 1296 -80 720 -80
WIRE 1296 80 1296 -80
WIRE 1296 304 720 304
WIRE 1296 304 1296 176
FLAG 432 48 0
FLAG 432 320 0
FLAG 1216 160 vgs
FLAG 512 128 vgs
FLAG 496 -80 vds
SYMBOL voltage 432 -64 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage 432 176 R0
SYMATTR InstName V2
SYMATTR Value -1
SYMBOL xnmesfet 720 128 R0
SYMATTR Value NE34018/CEL
SYMATTR InstName Q1
SYMBOL mesfet 1248 80 R0
SYMATTR InstName Q2
SYMATTR Value NE34018/CEL
SYMATTR Prefix X
TEXT 414 -324 Left 0 !.dc V1 0 5 0.01 V2 -0.5 0 .1
TEXT 416 -360 Left 0 !.include NE34018.cir
TEXT 672 -232 Left 0 ;"Universal" Symbol\nxnmesfet.asy\nChange NMF to NE34018
TEXT 1136 -232 Left 0 ;Mesfet symbol from LTspice\n1. CtrlRightMouseClick on the instance\n2. Change prefix Z to X, Prefix: X\n3. Press OK\n4. Change NMF to NE34018
TEXT 416 -696 Left 0 ;http://www.cel.com/prod/prod_smallsig.asp\nhttp://www.cel.com/pdf/datasheets/ne34018.pdf\nHelmut Sennewald, 12/23/2006\n \nI changed these two lines in the model file "NE34018.cir" from CEL,\nbut there are still many model paramters ignored by LTspice.\n \n*.MODEL NE34000 GASFET\n.MODEL NE34000 NMF \n*+(VTO=-0.6885   ALPHA=5          BETA=0.1838       GAMMA=0.038\n+(VTO=-0.6885   ALPHA=5          BETA=0.1838       LAMBDA=0.038
RECTANGLE Normal 976 336 640 -272
RECTANGLE Normal 1568 336 1088 -272