Version 4
SHEET 1 880 680
WIRE 240 -192 0 -192
WIRE 416 -192 240 -192
WIRE 416 -144 416 -192
WIRE 240 -128 240 -192
WIRE 0 -16 0 -192
WIRE 416 -16 416 -80
WIRE 240 64 240 -48
WIRE 368 64 240 64
WIRE 240 160 240 64
WIRE 416 208 416 80
WIRE 416 208 304 208
WIRE 416 320 416 208
WIRE 0 432 0 64
WIRE 240 432 240 256
WIRE 240 432 0 432
WIRE 416 432 416 400
WIRE 416 432 240 432
WIRE 240 480 240 432
FLAG 240 480 0
SYMBOL voltage 0 -32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 600
SYMBOL nmos 368 -16 R0
SYMATTR InstName M1
SYMATTR Value IPB65R420CFD
SYMBOL npn 304 160 M0
SYMATTR InstName Q1
SYMATTR Value 2N5550
SYMBOL res 224 -144 R0
SYMATTR InstName R1
SYMATTR Value 1000k
SYMBOL res 400 304 R0
SYMATTR InstName R2
SYMATTR Value 450
SYMBOL LED 400 -144 R0
SYMATTR InstName D1
SYMATTR Value STW8B12C
TEXT -34 442 Left 2 !.tran 20m