Version 4
SHEET 1 880 888
WIRE 416 -48 224 -48
WIRE 592 -48 416 -48
WIRE 224 32 224 -48
WIRE 224 144 224 112
WIRE 224 176 224 144
WIRE -128 224 -176 224
WIRE -32 224 -48 224
WIRE 80 224 32 224
WIRE 160 224 80 224
WIRE -176 336 -176 224
WIRE 416 336 416 -48
WIRE 80 352 80 224
WIRE 80 560 80 432
WIRE 224 560 224 272
WIRE 224 560 80 560
WIRE 416 560 416 416
WIRE 416 560 224 560
WIRE 224 624 224 560
WIRE -176 720 -176 416
WIRE 224 720 224 688
WIRE 224 720 -176 720
WIRE 592 720 592 -48
WIRE 592 720 224 720
WIRE 224 768 224 720
FLAG 224 144 mp1
FLAG 224 768 0
SYMBOL npn 160 176 R0
SYMATTR InstName Q1
SYMATTR Value BC547B
SYMBOL Misc\\EuropeanResistor 64 336 R0
SYMATTR InstName R20
SYMATTR Value 100K
SYMBOL Misc\\EuropeanResistor 208 16 R0
SYMATTR InstName R3
SYMATTR Value 220
SYMBOL cap 32 208 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL voltage -176 320 R0
WINDOW 3 -45 507 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(0 3.4 0 1n 1n 100n 0.1m)
SYMATTR InstName V1
SYMBOL voltage 416 320 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 124 Left 2
SYMATTR InstName V2
SYMATTR Value 9
SYMBOL cap 208 624 R0
SYMATTR InstName C2
SYMATTR Value 100n
SYMBOL Misc\\EuropeanResistor -32 208 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 100
TEXT -232 872 Left 2 !.tran 0 9.9003m 9.8999m