Version 4
SHEET 1 880 680
WIRE 64 0 -16 0
WIRE 144 0 64 0
WIRE 256 0 144 0
WIRE 336 0 256 0
WIRE 64 96 64 80
WIRE 128 96 64 96
WIRE 144 96 144 80
WIRE 336 96 336 80
WIRE 336 96 208 96
WIRE -16 112 -16 0
WIRE 64 112 64 96
WIRE 336 112 336 96
WIRE 128 128 128 96
WIRE 192 128 128 128
WIRE 256 128 256 80
WIRE 144 160 144 96
WIRE 144 160 128 160
WIRE 256 160 256 128
WIRE 272 160 256 160
WIRE -16 240 -16 192
WIRE 64 240 64 208
WIRE 64 240 -16 240
WIRE 336 240 336 208
WIRE 336 240 64 240
FLAG -16 240 0
SYMBOL voltage -16 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL npn 272 112 R0
SYMATTR InstName Q1
SYMATTR Value BC547B
SYMBOL npn 128 112 M0
SYMATTR InstName Q2
SYMATTR Value BC547B
SYMBOL res 48 -16 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 320 -16 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 240 -16 R0
SYMATTR InstName R3
SYMATTR Value 101k
SYMBOL res 128 -16 R0
SYMATTR InstName R4
SYMATTR Value 100k
SYMBOL cap 208 80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 10µ
SYMBOL cap 256 112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 10µ
TEXT -50 256 Left 2 !.tran 5