Version 4
SHEET 1 932 680
WIRE 384 -384 336 -384
WIRE 496 -384 464 -384
WIRE 496 -368 496 -384
WIRE 368 -272 304 -272
WIRE 496 -272 496 -288
WIRE 496 -272 368 -272
WIRE 368 -256 368 -272
WIRE 496 -256 496 -272
WIRE -256 -224 -288 -224
WIRE -224 -224 -256 -224
WIRE -96 -224 -144 -224
WIRE -48 -224 -96 -224
WIRE 48 -224 16 -224
WIRE 160 -224 128 -224
WIRE 240 -224 160 -224
WIRE -288 -160 -288 -224
WIRE 368 -160 368 -176
WIRE 384 -160 368 -160
WIRE 496 -160 496 -176
WIRE 496 -160 464 -160
WIRE 576 -160 496 -160
WIRE 688 -160 640 -160
WIRE 720 -160 688 -160
WIRE 496 -144 496 -160
WIRE 160 -96 160 -224
WIRE 192 -96 160 -96
WIRE 304 -96 304 -176
WIRE 304 -96 272 -96
WIRE 432 -96 304 -96
WIRE 720 -48 720 -160
WIRE -288 -16 -288 -80
WIRE 160 0 160 -96
WIRE 208 0 160 0
WIRE 368 0 272 0
WIRE 496 0 496 -48
WIRE 496 0 448 0
WIRE 304 32 304 -96
WIRE 496 32 496 0
WIRE -288 128 -288 64
WIRE 304 128 304 112
WIRE 304 128 -288 128
WIRE 496 128 496 112
WIRE 496 128 304 128
WIRE 720 128 720 32
WIRE 720 128 496 128
WIRE -288 144 -288 128
FLAG -288 144 0
FLAG -256 -224 src
FLAG 336 -384 0
FLAG 688 -160 out
FLAG -96 -224 in
SYMBOL voltage -288 -176 R0
WINDOW 39 0 0 Left 2
WINDOW 0 -115 74 Left 2
WINDOW 3 -116 106 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(0 63.24m 25Meg)
SYMATTR Value2 AC 2
SYMBOL res -240 -208 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL voltage -288 -32 R0
WINDOW 39 0 0 Left 2
WINDOW 0 -115 72 Left 2
WINDOW 3 -116 105 Left 2
WINDOW 123 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(0 63.24m 26Meg)
SYMBOL voltage 480 -384 M270
WINDOW 0 20 119 VLeft 2
WINDOW 3 -22 118 VLeft 2
WINDOW 39 0 0 Left 2
WINDOW 123 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 8V
SYMBOL cap 576 -176 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 150n
SYMBOL res 736 -64 M0
SYMATTR InstName R2
SYMATTR Value 50
SYMBOL res 480 16 R0
SYMATTR InstName R7
SYMATTR Value 18
SYMBOL res 480 -384 R0
SYMATTR InstName R8
SYMATTR Value 20
SYMBOL cap -48 -208 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 150n
SYMBOL res 288 16 R0
SYMATTR InstName R3
SYMATTR Value 270
SYMBOL res 176 -80 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 22k
SYMBOL res 480 -272 R0
SYMATTR InstName R5
SYMATTR Value 51
SYMBOL res 352 -16 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 120
SYMBOL cap 208 -16 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL pnp 240 -176 M180
WINDOW 0 -29 72 Left 2
WINDOW 3 -39 108 Left 2
SYMATTR InstName Q1
SYMATTR Value BFT93
SYMBOL npn 432 -144 R0
WINDOW 0 74 78 Left 2
WINDOW 3 31 48 Left 2
SYMATTR InstName Q2
SYMATTR Value BFR96
SYMBOL ind 384 -272 M0
WINDOW 0 37 82 Left 2
WINDOW 3 36 44 Left 2
SYMATTR InstName L1
SYMATTR Value 330µ
SYMATTR SpiceLine Rser=1 Rpar=20k Cpar=2p
SYMBOL res 480 -144 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R9
SYMATTR Value 6.8
SYMBOL res 144 -240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 2.2
TEXT -400 -360 Left 2 !;ac dec 1000 0.1Meg 150Meg
TEXT -400 -328 Left 2 !;noise V(out) V1 dec 1k 100k 150Meg
TEXT -400 -392 Left 2 !.tran 0 220u 10u 0.5n