Version 4
SHEET 1 896 680
WIRE 528 0 304 0
WIRE 304 80 304 0
WIRE 528 96 528 0
WIRE 48 128 -144 128
WIRE 240 128 128 128
WIRE -144 192 -144 128
WIRE -144 336 -144 272
WIRE 304 336 304 176
WIRE 528 336 528 176
FLAG -144 336 0
FLAG 304 336 0
FLAG 528 336 0
SYMBOL res 144 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1000
SYMBOL voltage -144 176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(0 3.3 0.5 1 1E-3 5 0 1)
SYMBOL npn 240 80 R0
SYMATTR InstName Q1
SYMATTR Value 2N2222
SYMBOL voltage 528 80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 10
TEXT -178 360 Left 2 !.tran 10