Version 4
SHEET 1 880 680
WIRE 192 -80 96 -80
WIRE 224 -80 192 -80
WIRE 96 -32 96 -80
WIRE 224 -32 224 -80
WIRE 224 64 224 48
WIRE 320 64 224 64
WIRE 224 96 224 64
WIRE 0 144 -48 144
WIRE 96 144 96 48
WIRE 96 144 64 144
WIRE 160 144 96 144
WIRE -736 176 -736 160
WIRE -608 176 -608 160
WIRE -608 176 -736 176
WIRE -736 192 -736 176
WIRE 96 224 96 144
WIRE 96 352 96 304
WIRE 224 352 224 192
WIRE 224 352 96 352
WIRE 224 384 224 352
FLAG -736 192 0
FLAG -736 80 +10V
FLAG 192 -80 +10V
FLAG -608 80 Vin
FLAG -48 144 Vin
FLAG 320 64 Vout
FLAG 224 384 0
SYMBOL npn 160 96 R0
WINDOW 0 56 32 Invisible 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL voltage -736 64 R0
WINDOW 0 24 16 Invisible 0
WINDOW 3 -28 61 Left 0
SYMATTR InstName V1
SYMATTR Value +10V
SYMBOL voltage -608 64 R0
WINDOW 0 24 16 Invisible 0
WINDOW 3 55 -62 VRight 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value SINE(0 0.03V 1kHz)
SYMBOL cap 64 128 R90
WINDOW 0 0 32 Invisible 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 1µF
SYMBOL res 80 -48 R0
WINDOW 0 36 40 Invisible 0
SYMATTR InstName R4
SYMATTR Value 100K
SYMBOL res 80 208 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 35 60 Left 0
SYMATTR InstName R3
SYMATTR Value 7.2K
SYMBOL res 208 -48 R0
WINDOW 0 36 40 Invisible 0
SYMATTR InstName R2
SYMATTR Value 1K
TEXT -728 264 Left 0 !.tran 5ms
TEXT 24 256 Left 0 ;10K
TEXT 24 280 Left 0 ;pot