Version 4
SHEET 1 1452 680
WIRE 1152 -160 944 -160
WIRE 944 -128 944 -160
WIRE 944 -16 944 -48
WIRE 1024 -16 944 -16
WIRE 1152 -16 1152 -160
WIRE 736 32 720 32
WIRE 848 32 816 32
WIRE 880 32 848 32
WIRE 896 32 880 32
WIRE 1024 48 1024 -16
WIRE 720 112 720 32
WIRE 848 128 848 32
WIRE 720 256 720 192
WIRE 848 256 848 192
WIRE 848 256 720 256
WIRE 944 256 944 80
WIRE 944 256 848 256
WIRE 1024 256 1024 128
WIRE 1024 256 944 256
WIRE 1152 256 1152 64
WIRE 1152 256 1024 256
WIRE 720 272 720 256
FLAG 720 272 0
SYMBOL voltage 720 96 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -294 99 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(14 0 0 0 0 1m 4m)
SYMBOL voltage 1152 -32 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL res 928 -144 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL res 1008 32 R0
SYMATTR InstName RLOAD
SYMATTR Value 10k
SYMBOL npn 880 -16 R0
SYMATTR InstName Q1
SYMATTR Value 2N2222
SYMBOL res 832 16 R90
WINDOW 0 -7 58 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL diode 832 128 R0
SYMATTR InstName D1
SYMATTR Value 1N4001
TEXT 576 232 Left 0 !.tran 0 1 0