Version 4
SHEET 1 880 680
WIRE 112 -32 -128 -32
WIRE 112 0 112 -32
WIRE 112 0 16 0
WIRE 208 0 112 0
WIRE 208 96 208 80
WIRE 288 96 208 96
WIRE 208 112 208 96
WIRE -64 160 -128 160
WIRE 16 160 16 80
WIRE 16 160 0 160
WIRE 144 160 16 160
WIRE 208 240 208 208
WIRE 320 240 208 240
WIRE 16 256 16 160
WIRE 208 256 208 240
WIRE 320 272 320 240
WIRE 112 336 16 336
WIRE 208 336 112 336
WIRE 320 336 208 336
WIRE 112 368 112 336
FLAG 112 368 0
FLAG -128 48 0
FLAG -128 240 0
SYMBOL npn 144 112 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL res 192 -16 R0
SYMATTR InstName R1
SYMATTR Value 5.1k
SYMBOL res 192 240 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL res 0 -16 R0
SYMATTR InstName R3
SYMATTR Value 39k
SYMBOL res 0 240 R0
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL voltage -128 -48 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL voltage -128 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value SINE(0 0.8 50k)
SYMBOL cap 0 144 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 10µ
SYMBOL cap 336 336 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value 1µ
TEXT -128 392 Left 2 !.tran 40u