Version 4 SHEET 1 1404 816 WIRE 544 144 272 144 WIRE 272 208 272 144 WIRE 272 224 272 208 WIRE 544 256 544 144 WIRE 192 304 32 304 WIRE 224 304 192 304 WIRE 272 336 272 320 WIRE 32 352 32 304 WIRE 32 464 32 432 WIRE 272 464 272 336 WIRE 272 464 32 464 WIRE 544 464 544 336 WIRE 544 464 272 464 WIRE 272 480 272 464 FLAG 272 208 D FLAG 272 336 S FLAG 272 480 0 FLAG 192 304 G SYMBOL voltage 544 240 R0 SYMATTR InstName VDS SYMATTR Value 10V SYMBOL voltage 32 336 R0 SYMATTR InstName VGS SYMATTR Value 0V SYMBOL mesfet 224 224 R0 SYMATTR InstName Z1 SYMATTR Value mesfet1 100 TEXT 160 640 Left 2 ;.DC VDS 0V 10V 100mV VGS 0V 5V 1V TEXT -24 528 Left 2 !.model mesfet1 NMF (beta=100u Vto=-1V lambda=0.05 alpha={alpha_variable}) TEXT 104 584 Left 2 !.STEP param alpha_variable LIST 0.5 1.0 2.0 1e6 TEXT 264 696 Left 2 !.DC VDS 0V 10V 1mV TEXT 376 752 Left 2 !.OP