Version 4
SHEET 1 880 680
WIRE 112 -16 -128 -16
WIRE 256 -16 112 -16
WIRE 432 -16 256 -16
WIRE -128 48 -128 -16
WIRE 112 48 112 -16
WIRE 64 96 -16 96
WIRE 256 96 256 -16
WIRE -16 128 -16 96
WIRE 64 144 64 96
WIRE 112 144 112 128
WIRE 112 144 64 144
WIRE 192 144 112 144
WIRE 432 160 432 -16
WIRE -128 240 -128 128
WIRE 16 240 -128 240
WIRE 112 240 96 240
WIRE 256 240 256 192
WIRE 256 240 176 240
WIRE 256 272 256 240
WIRE -16 304 -16 208
WIRE -128 352 -128 240
WIRE -80 352 -128 352
WIRE -16 416 -16 400
WIRE 256 416 256 352
WIRE 432 416 432 240
FLAG -16 416 0
FLAG 432 416 0
FLAG 256 416 0
SYMBOL res 96 32 R0
SYMATTR InstName R1
SYMATTR Value 10K
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL res -32 112 R0
SYMATTR InstName R2
SYMATTR Value 100
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL npn -80 304 R0
SYMATTR InstName Q2
SYMATTR Value BC547C
SYMBOL cap 176 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1µ
SYMATTR SpiceLine V=25 Irms=0 Rser=0.007 Lser=0 mfg="TDK" pn="C3216X7RIE105M" type="X7R"
SYMBOL res 112 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 100
SYMBOL res -144 32 R0
WINDOW 3 -159 -6 Left 2
SYMATTR InstName R4
SYMATTR Value 1Meg
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL voltage 432 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V1
SYMATTR Value 9
SYMATTR SpiceLine Rser=1
SYMBOL res 240 256 R0
SYMATTR InstName R5
SYMATTR Value 8
SYMBOL pnp 192 192 M180
SYMATTR InstName Q1
TEXT -166 440 Left 2 !.tran 30