Version 4
SHEET 1 1172 692
WIRE -176 -192 -240 -192
WIRE 128 -192 -96 -192
WIRE 304 -192 128 -192
WIRE 128 -176 128 -192
WIRE 128 -80 128 -96
WIRE 128 -80 16 -80
WIRE 16 -48 16 -80
WIRE 128 0 128 -80
WIRE 144 0 128 0
WIRE 416 0 208 0
WIRE 672 0 416 0
WIRE 832 0 736 0
WIRE 128 32 128 0
WIRE 832 32 832 0
WIRE -272 80 -336 80
WIRE -96 80 -192 80
WIRE 16 80 16 32
WIRE 16 80 -32 80
WIRE 64 80 16 80
WIRE -336 128 -336 80
WIRE 416 128 416 0
WIRE 464 128 416 128
WIRE 512 128 464 128
WIRE 592 128 576 128
WIRE 720 128 592 128
WIRE 832 144 832 112
WIRE 464 192 464 128
WIRE 592 192 592 128
WIRE 304 240 304 -192
WIRE -336 272 -336 208
WIRE 464 288 464 256
WIRE 592 288 592 256
WIRE 128 320 128 128
WIRE 304 368 304 320
WIRE 304 368 272 368
WIRE 448 368 304 368
WIRE 576 368 448 368
WIRE 720 368 720 128
WIRE 720 368 656 368
WIRE 304 400 304 368
WIRE 448 400 448 368
WIRE 128 496 128 416
WIRE 304 496 304 480
WIRE 448 496 448 464
FLAG 128 496 0
FLAG -240 -192 0
FLAG -336 272 0
FLAG 592 288 0
FLAG 464 288 0
FLAG 448 496 0
FLAG 832 144 0
FLAG 304 496 0
SYMBOL npn 64 32 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL Misc\\EuropeanResistor 112 -192 R0
SYMATTR InstName R1
SYMATTR Value 1.5k
SYMBOL cap 144 16 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value 220n
SYMBOL Misc\\battery -80 -192 R90
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 9V
SYMBOL cap -96 96 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C5
SYMATTR Value 220n
SYMBOL voltage -336 112 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 50m
SYMATTR InstName V2
SYMATTR Value SINE(0 2m 489k)
SYMBOL Misc\\EuropeanResistor -288 96 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R8
SYMATTR Value 1.5k
SYMBOL diode 576 112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL cap 576 192 R0
SYMATTR InstName C9
SYMATTR Value 100n
SYMBOL diode 448 192 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL Misc\\EuropeanResistor 0 -64 R0
SYMATTR InstName R13
SYMATTR Value 470k
SYMBOL cap 432 400 R0
SYMATTR InstName C6
SYMATTR Value 100n
SYMBOL cap 672 16 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 220n
SYMBOL Misc\\EuropeanResistor 816 16 R0
SYMATTR InstName R3
SYMATTR Value 1.5k
SYMBOL Misc\\EuropeanResistor 560 384 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R6
SYMATTR Value 33k
SYMBOL npn 192 320 M0
SYMATTR InstName Q2
SYMATTR Value BC547C
SYMBOL Misc\\EuropeanResistor 176 384 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 33k
SYMBOL Misc\\EuropeanResistor 288 224 R0
SYMATTR InstName R4
SYMATTR Value 75k
SYMBOL Misc\\EuropeanResistor 288 384 R0
SYMATTR InstName R5
SYMATTR Value 10k
TEXT -368 312 Left 2 !.tran 0 200m 20m