Version 4
SHEET 1 880 680
WIRE 272 -80 176 -80
WIRE 448 -80 272 -80
WIRE 496 -80 448 -80
WIRE 176 -48 176 -80
WIRE 272 -48 272 -80
WIRE 496 32 496 -80
WIRE 272 64 272 32
WIRE 368 64 272 64
WIRE 272 80 272 64
WIRE 432 80 432 64
WIRE -16 128 -32 128
WIRE 64 128 48 128
WIRE 160 128 144 128
WIRE 176 128 176 32
WIRE 176 128 160 128
WIRE 208 128 176 128
WIRE 496 128 496 112
WIRE -32 192 -32 128
WIRE 176 192 176 128
WIRE 272 208 272 176
WIRE 304 208 272 208
WIRE 400 208 384 208
WIRE 432 208 432 160
WIRE 464 208 432 208
WIRE 480 208 464 208
WIRE 480 224 480 208
WIRE 272 240 272 208
WIRE 400 256 400 208
WIRE -32 288 -32 272
WIRE 176 336 176 272
WIRE 272 336 272 320
WIRE 400 336 400 320
WIRE 480 336 480 304
FLAG -32 288 0
FLAG 496 128 0
FLAG 272 336 0
FLAG 400 336 0
FLAG 176 336 0
FLAG -32 128 in
FLAG 160 128 base
FLAG 448 -80 supply
FLAG 480 336 0
FLAG 464 208 out
SYMBOL voltage -32 176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(0 0.25 500)
SYMBOL voltage 496 16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 9V
SYMBOL cap 48 112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 0.1u
SYMBOL res 160 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 47k
SYMBOL res 192 288 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 470k
SYMBOL res 192 48 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 2.2meg
SYMBOL npn 208 80 R0
SYMATTR InstName Q1
SYMATTR Value 2N5089
SYMBOL res 256 224 R0
SYMATTR InstName R4
SYMATTR Value 10.5k
SYMBOL res 400 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 2.2k
SYMBOL res 256 48 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R6
SYMATTR Value 47k
SYMBOL cap 384 256 R0
SYMATTR InstName C2
SYMATTR Value 10u
SYMBOL cap 432 48 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 0.1u
SYMBOL res 416 64 R0
SYMATTR InstName R7
SYMATTR Value 1meg
SYMBOL res 464 208 R0
SYMATTR InstName R8
SYMATTR Value 1meg
TEXT -48 336 Left 2 !.tran 0 500m 490m