Version 4
SHEET 1 1052 680
WIRE 32 80 -64 80
WIRE 144 80 112 80
WIRE 176 80 144 80
WIRE 288 80 256 80
WIRE 320 80 288 80
WIRE 432 80 400 80
WIRE 464 80 432 80
WIRE 576 80 544 80
WIRE 608 80 576 80
WIRE 720 80 688 80
WIRE 752 80 720 80
WIRE 864 80 832 80
WIRE 912 80 864 80
WIRE -64 96 -64 80
WIRE 144 112 144 80
WIRE 288 112 288 80
WIRE 432 112 432 80
WIRE 576 112 576 80
WIRE 720 112 720 80
WIRE 864 112 864 80
WIRE -64 208 -64 176
WIRE 144 208 144 176
WIRE 288 208 288 176
WIRE 432 208 432 176
WIRE 576 208 576 176
WIRE 720 208 720 176
WIRE 864 208 864 176
FLAG 144 208 0
FLAG 288 208 0
FLAG 432 208 0
FLAG 576 208 0
FLAG 720 208 0
FLAG 864 208 0
FLAG -64 208 0
FLAG 912 80 out
FLAG -64 80 in
SYMBOL Misc\\EuropeanResistor 16 96 R270
WINDOW 0 27 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL cap 128 112 R0
SYMATTR InstName C1
SYMATTR Value 22n
SYMBOL Misc\\EuropeanResistor 160 96 R270
WINDOW 0 27 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value 2.2k
SYMBOL cap 272 112 R0
SYMATTR InstName C2
SYMATTR Value 10n
SYMBOL Misc\\EuropeanResistor 304 96 R270
WINDOW 0 27 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName R3
SYMATTR Value 4.7k
SYMBOL cap 416 112 R0
SYMATTR InstName C3
SYMATTR Value 4.7n
SYMBOL cap 560 112 R0
SYMATTR InstName C4
SYMATTR Value 2.2n
SYMBOL Misc\\EuropeanResistor 592 96 R270
WINDOW 0 27 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName R4
SYMATTR Value 22k
SYMBOL cap 704 112 R0
SYMATTR InstName C5
SYMATTR Value 1n
SYMBOL cap 848 112 R0
SYMATTR InstName C6
SYMATTR Value 470p
SYMBOL Misc\\EuropeanResistor 448 96 R270
WINDOW 0 27 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor 736 96 R270
WINDOW 0 27 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName R6
SYMATTR Value 47k
SYMBOL voltage -64 80 R0
WINDOW 3 -26 173 Left 0
WINDOW 123 24 132 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(0 1 0 1n 1n 16.667u 33.333u)
SYMATTR Value2 AC 1
SYMATTR InstName V1
TEXT -88 -48 Left 0 !.ac dec 100 1 50k
TEXT -88 -16 Left 0 ;.tran 1m