Version 4 SHEET 1 1224 816 WIRE 432 32 432 0 WIRE 128 96 128 32 WIRE 432 144 432 112 WIRE 432 160 432 144 WIRE 128 224 128 176 WIRE 128 224 64 224 WIRE 64 240 64 224 WIRE 384 240 336 240 WIRE 128 272 128 224 WIRE 336 272 336 240 WIRE 432 272 432 256 WIRE 432 288 432 272 WIRE 128 416 128 352 WIRE 432 416 432 368 FLAG 336 272 0 FLAG 432 0 VDD FLAG 432 416 VSS FLAG 64 240 0 FLAG 128 32 VDD FLAG 128 416 VSS FLAG 432 144 D FLAG 432 272 S SYMBOL voltage 128 80 R0 SYMATTR InstName Vps1 SYMATTR Value 5V SYMBOL res 416 16 R0 SYMATTR InstName RD SYMATTR Value 10k SYMBOL res 416 272 R0 SYMATTR InstName RS SYMATTR Value 5k SYMBOL voltage 128 256 R0 SYMATTR InstName Vps2 SYMATTR Value 5V SYMBOL nmos 384 160 R0 SYMATTR InstName M1 SYMATTR Value nmos_enhancement_mosfet L=10u W=400u TEXT 280 576 Left 2 !.OP TEXT 40 520 Left 2 !.model nmos_enhancement_mosfet nmos (kp=20u Vto=+2V lambda=0)