Version 4
SHEET 1 880 820
WIRE 416 -16 128 -16
WIRE 512 -16 416 -16
WIRE 512 0 512 -16
WIRE 128 48 128 -16
WIRE 512 112 512 80
WIRE 416 128 416 -16
WIRE -64 176 -192 176
WIRE 96 176 -64 176
WIRE 128 176 128 128
WIRE 128 176 96 176
WIRE 272 176 128 176
WIRE 352 176 272 176
WIRE 272 208 272 176
WIRE 128 272 128 176
WIRE -192 288 -192 176
WIRE -64 288 -64 176
WIRE 272 304 272 272
WIRE 416 304 416 224
WIRE 416 304 272 304
WIRE 464 304 416 304
WIRE 272 336 272 304
WIRE 416 336 416 304
WIRE -192 448 -192 352
WIRE -64 448 -64 352
WIRE 128 448 128 352
WIRE 272 448 272 400
WIRE 416 448 416 416
FLAG 512 112 0
FLAG 128 448 0
FLAG 416 448 0
FLAG 272 448 0
FLAG 96 176 b
FLAG -64 448 0
FLAG -192 448 0
FLAG 464 304 out
IOPIN 464 304 Out
SYMBOL res 112 256 R0
SYMATTR InstName R2
SYMATTR Value 10Meg
SYMBOL voltage 512 -16 R0
SYMATTR InstName V1
SYMATTR Value 3.3
SYMBOL res 400 320 R0
SYMATTR InstName R3
SYMATTR Value 470k
SYMBOL cap 256 208 R0
SYMATTR InstName C1
SYMATTR Value 47p
SYMBOL cap 256 336 R0
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL cap -80 288 R0
SYMATTR InstName C5
SYMATTR Value 10p
SYMBOL Misc\\xtal -208 288 R0
SYMATTR InstName Y1
SYMATTR Value {C1}
SYMATTR SpiceLine Rser={Rs} Lser={L1} Cpar={C0}
SYMBOL npn 352 128 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL res 112 32 R0
SYMATTR InstName R1
SYMATTR Value 10Meg
TEXT 40 568 Left 2 !.tran 0 5 0 .5u
TEXT 48 520 Left 2 !.ic V(b)=0
TEXT -216 512 Left 2 !.param L1=4448\n.param C1=.00355p\n.param RS=20k\n.param C0=1.84p
TEXT 40 592 Left 2 !.options plotwinsize=0
TEXT -256 280 Left 2 ;RS\nL1\nC1\nC0
TEXT -208 -56 Left 4 ;40kHz Crystal Oscillator
TEXT 312 544 Left 2 !.options method=trap
TEXT 312 512 Left 2 ;Don' use method Gear