Version 4
SHEET 1 1012 880
WIRE -288 352 -400 352
WIRE -32 352 -208 352
WIRE 0 352 -32 352
WIRE 832 352 96 352
WIRE -400 432 -400 352
WIRE 64 432 64 400
WIRE 64 432 -32 432
WIRE 832 496 832 352
WIRE 64 544 64 432
WIRE 64 656 64 624
FLAG -400 512 0
FLAG 832 576 0
FLAG 64 736 0
SYMBOL njf 0 400 R270
SYMATTR InstName J1
SYMATTR Value Jmmbfj310
SYMBOL voltage -400 416 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 -192 336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL res 848 592 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 50
SYMBOL voltage 64 640 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value -12
SYMBOL res 80 640 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 47500
SYMBOL res -16 448 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 47500
TEXT -1152 384 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 152 304 Left 2 !.tran 0.001