Version 4
SHEET 1 880 680
WIRE 176 -48 48 -48
WIRE 48 -16 48 -48
WIRE 176 -16 176 -48
WIRE 48 96 48 64
WIRE 176 96 176 64
WIRE 176 112 176 96
WIRE 128 176 48 176
WIRE 176 224 176 208
WIRE 176 256 176 224
WIRE 48 368 48 176
WIRE 176 368 176 336
WIRE 176 368 48 368
WIRE 176 384 176 368
FLAG 176 384 0
FLAG 48 96 0
FLAG 176 96 d
FLAG 176 224 s
SYMBOL njf 128 112 R0
SYMATTR InstName J1
SYMATTR Value 2N5484
SYMBOL Misc\\EuropeanResistor 160 240 R0
SYMATTR InstName R2
SYMATTR Value 470
SYMBOL Misc\\EuropeanResistor 160 -32 R0
SYMATTR InstName RL
SYMATTR Value {RL}
SYMBOL voltage 48 -32 R0
SYMATTR InstName V1
SYMATTR Value 9
TEXT 24 -96 Left 2 !.op
TEXT 24 -128 Left 2 !.param RL=1k
TEXT 24 -160 Left 2 !.step param RL 1 5k 10