Version 4
SHEET 1 1012 1092
WIRE -240 352 -352 352
WIRE -32 352 -160 352
WIRE 176 352 -32 352
WIRE 272 352 176 352
WIRE 352 352 272 352
WIRE -32 368 -32 352
WIRE 352 384 352 352
WIRE 176 416 176 352
WIRE -352 432 -352 352
WIRE -32 480 -32 448
WIRE 128 480 -32 480
WIRE -32 512 -32 480
WIRE -352 544 -352 512
WIRE 176 544 176 512
WIRE 352 544 352 464
WIRE -32 608 -32 592
WIRE -32 720 -32 688
FLAG -352 544 0
FLAG 352 544 0
FLAG -32 720 0
FLAG -352 352 in
FLAG 176 544 0
FLAG 272 352 out
SYMBOL njf 128 416 R0
SYMATTR InstName J1
SYMATTR Value Jmmbfj310
SYMBOL voltage -352 416 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(0 3.556 20K)
SYMBOL res -144 336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 500
SYMBOL res 336 480 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 22k
SYMBOL voltage -32 592 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value {VG}
SYMBOL res -48 608 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 47500
SYMBOL res -48 464 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 47500
TEXT -400 992 Left 2 !.MODEL Jmmbfj310 njf\n+VTO=-4.16995 BETA=0.00260834 LAMBDA=0 RD=0.828616\n+RS=1.65723 IS=1e-14 CGS=5.80456e-12 CGD=5.80456e-12\n+PB=1.06503 FC=0.5 KF=1e-20 AF=0.2
TEXT -400 840 Left 2 !.tran 0 0.1m 0 0.1u
TEXT -400 920 Left 2 !.four 20k V(out)
TEXT -400 792 Left 2 !.step param VG -11 -2 0.5
TEXT -400 872 Left 2 !.options plotwinsize=0