Version 4
SHEET 1 2612 1528
WIRE 2128 1152 1984 1152
WIRE 1984 1200 1984 1152
WIRE 2128 1216 2128 1152
WIRE 1920 1248 1840 1248
WIRE 1840 1264 1840 1248
WIRE 1920 1264 1920 1248
WIRE 1936 1264 1920 1264
WIRE 1840 1360 1840 1344
WIRE 1984 1360 1984 1296
WIRE 2128 1360 2128 1296
FLAG 2128 1360 0
FLAG 1984 1360 0
FLAG 1840 1360 0
SYMBOL voltage 2128 1200 R0
SYMATTR InstName V1
SYMATTR Value 0.
SYMBOL njf 1936 1200 R0
SYMATTR InstName J1
SYMATTR Value 2N3819
SYMBOL voltage 1840 1248 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 0
TEXT 1824 1408 Left 2 !.dc V1 0 15 10m V2 -5 0 100mV
TEXT 1992 1448 Top 1 ;This example schematic is supplied for informational/educational purposes only.

将以上内容保存成2V-I-Curve_FET_DC_sweep.asc文件，然后用LTspice打开，执行Run进行仿真，结果如下：