Version 4
SHEET 1 880 680
WIRE 384 32 208 32
WIRE 208 96 208 32
WIRE -112 144 -176 144
WIRE -16 144 -112 144
WIRE 112 144 48 144
WIRE 128 144 128 32
WIRE 128 144 112 144
WIRE 144 144 128 144
WIRE 112 192 112 144
WIRE -176 208 -176 144
WIRE -112 208 -112 144
WIRE 144 256 112 256
WIRE 208 256 208 192
WIRE 208 256 144 256
WIRE 48 272 48 144
WIRE 208 304 208 256
FLAG 208 384 0
FLAG 384 112 0
FLAG -176 272 0
FLAG -112 288 0
FLAG 48 352 0
FLAG 144 320 0
SYMBOL npn 144 96 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL res 192 288 R0
SYMATTR InstName R1
SYMATTR Value 910
SYMBOL res 112 48 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value 11k
SYMBOL cap -16 160 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C1
SYMATTR Value 500p
SYMBOL cap 128 256 R180
WINDOW 0 24 64 Left 0
WINDOW 3 -27 59 Left 0
SYMATTR InstName C2
SYMATTR Value 1n
SYMBOL voltage 384 16 R0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value2 AC 1
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap -160 272 R180
WINDOW 0 24 64 Left 0
WINDOW 3 24 8 Left 0
SYMATTR InstName C3
SYMATTR Value 1000p
SYMBOL ind -128 192 R0
SYMATTR InstName L1
SYMATTR Value 900µ
SYMBOL res 32 256 R0
SYMATTR InstName R3
SYMATTR Value 1500
SYMBOL cap 128 256 R0
SYMATTR InstName C4
SYMATTR Value 1n
TEXT -248 408 Left 0 !.ac oct 1001 100 100Meg