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 384 224 336 224 WIRE 128 240 128 176 WIRE 336 256 336 224 WIRE 432 272 432 256 WIRE 432 288 432 272 WIRE 432 416 432 368 FLAG 336 256 0 FLAG 432 0 VDD FLAG 128 240 0 FLAG 128 32 VDD FLAG 432 144 D FLAG 432 272 S FLAG 432 416 0 SYMBOL voltage 128 80 R0 SYMATTR InstName Vps1 SYMATTR Value 10V SYMBOL res 416 16 R0 SYMATTR InstName RD SYMATTR Value 1k SYMBOL res 416 272 R0 SYMATTR InstName RS SYMATTR Value 0.5k SYMBOL njf 384 160 R0 SYMATTR InstName J1 SYMATTR Value n_jfet TEXT 280 576 Left 2 !.OP TEXT 40 520 Left 2 !.model n_jfet NJF (beta=1m Vto=-4V lambda=0)