Version 4 SHEET 1 1224 816 WIRE 432 144 432 80 WIRE 432 160 432 144 WIRE 144 224 144 160 WIRE 384 240 336 240 WIRE 432 272 432 256 WIRE 336 304 336 240 WIRE 432 304 432 272 WIRE 432 304 336 304 WIRE 432 320 432 304 WIRE 144 368 144 304 WIRE 432 448 432 400 FLAG 432 448 0 FLAG 432 80 VDD FLAG 144 368 0 FLAG 144 160 VDD FLAG 432 144 D FLAG 432 272 S SYMBOL voltage 144 208 R0 SYMATTR InstName Vps1 SYMATTR Value 10V SYMBOL res 416 304 R0 SYMATTR InstName RS SYMATTR Value 100k SYMBOL nmos 384 160 R0 SYMATTR InstName M1 SYMATTR Value nmos_depletion_mosfet L=10u W=10u TEXT 352 568 Left 2 !.OP TEXT 40 520 Left 2 !.model nmos_depletion_mosfet nmos (kp=1m Vto=-1V lambda=0.04)