Version 4
SHEET 1 880 680
WIRE 256 0 64 0
WIRE 368 0 256 0
WIRE 368 16 368 0
WIRE 64 48 64 0
WIRE 256 64 256 0
WIRE 176 112 128 112
WIRE 192 112 176 112
WIRE 368 112 368 96
WIRE 128 160 128 112
WIRE 176 160 176 112
WIRE 272 160 256 160
WIRE 304 160 272 160
WIRE 64 256 64 128
WIRE 128 256 128 240
WIRE 128 256 64 256
WIRE 176 256 176 240
WIRE 176 256 128 256
WIRE 272 256 272 240
WIRE 272 256 176 256
WIRE 368 256 368 208
WIRE 368 256 272 256
WIRE 64 272 64 256
FLAG 64 272 0
SYMBOL voltage 64 32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL npn 304 112 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL npn 192 64 R0
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL res 256 144 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 160 144 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 112 144 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 352 0 R0
SYMATTR InstName R5
SYMATTR Value 100
TEXT 30 296 Left 2 !.tran 0,1