Version 4 SHEET 1 2216 816 WIRE 1312 32 1312 -16 WIRE 1312 176 1312 112 WIRE 1312 208 1312 176 WIRE 560 256 560 176 WIRE 1232 288 800 288 WIRE 1264 288 1232 288 WIRE 800 352 800 288 WIRE 560 448 560 336 WIRE 800 464 800 432 WIRE 1312 464 1312 304 WIRE 800 576 800 544 FLAG 1312 176 D FLAG 1312 464 0 FLAG 1232 288 G FLAG 560 448 0 FLAG 560 176 VDD FLAG 1312 -16 VDD FLAG 800 576 0 SYMBOL nmos 1264 208 R0 SYMATTR InstName M1 SYMATTR Value nmos_enhancement_mosfet L=10u W=10u SYMBOL voltage 800 336 R0 SYMATTR InstName Vgs_ac SYMATTR Value PULSE(-0.5V 0.5V 0 0.5ms 0.5ms 0 1ms) SYMBOL res 1328 128 R180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName RD SYMATTR Value 1.33k SYMBOL voltage 560 240 R0 SYMATTR InstName Vps1 SYMATTR Value 20V SYMBOL voltage 800 448 R0 SYMATTR InstName VGS SYMATTR Value 5V TEXT 960 712 Left 2 ;.TRAN 100us 3ms 0ms 100us TEXT 728 648 Left 2 !.model nmos_enhancement_mosfet nmos (kp=2m Vto=+2V lambda=0.01) TEXT 1048 784 Left 2 !.TF V(D) vgs_ac