Version 4 SHEET 1 2452 680 WIRE 464 176 368 176 WIRE 544 176 464 176 WIRE 720 176 640 176 WIRE 784 176 720 176 WIRE 368 224 368 176 WIRE 544 224 544 208 WIRE 640 224 640 208 WIRE -416 240 -496 240 WIRE -304 240 -336 240 WIRE -272 240 -304 240 WIRE -160 240 -192 240 WIRE -128 240 -160 240 WIRE -16 240 -48 240 WIRE 16 240 -16 240 WIRE 128 240 96 240 WIRE 240 240 128 240 WIRE 320 240 240 240 WIRE 784 256 784 176 WIRE -496 272 -496 240 WIRE 240 272 240 240 WIRE -304 288 -304 240 WIRE -160 288 -160 240 WIRE -16 288 -16 240 WIRE 128 288 128 240 WIRE 320 320 320 288 WIRE 368 320 368 304 WIRE 368 320 320 320 WIRE -496 368 -496 352 WIRE -304 368 -304 352 WIRE -160 368 -160 352 WIRE -16 368 -16 352 WIRE 128 368 128 352 WIRE 240 368 240 352 WIRE 368 368 368 320 WIRE 784 368 784 336 FLAG 544 224 0 FLAG 640 224 0 FLAG 784 368 0 FLAG 464 176 in FLAG 368 368 0 FLAG -496 368 0 FLAG -304 368 0 FLAG -160 368 0 FLAG -16 368 0 FLAG 128 368 0 FLAG 240 368 0 FLAG 720 176 out SYMBOL tline 592 192 R0 WINDOW 3 2 52 Top 2 SYMATTR Value Td=330n Z0=75 SYMATTR InstName T1 SYMBOL voltage -496 256 R0 WINDOW 3 -11 -84 Left 2 WINDOW 123 -13 -59 Left 2 WINDOW 39 0 0 Left 2 WINDOW 0 -9 -109 Left 2 SYMATTR Value PULSE(0 6 100u 1u 1u 10u) SYMATTR Value2 AC 2 SYMATTR InstName V1 SYMBOL res 768 240 R0 SYMATTR InstName R1 SYMATTR Value 5k SYMBOL e 368 208 R0 SYMATTR InstName E1 SYMATTR Value 1 SYMBOL res 224 256 R0 SYMATTR InstName R4 SYMATTR Value 50 SYMBOL res -320 224 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 50 SYMBOL cap -320 288 R0 SYMATTR InstName C1 SYMATTR Value 35.19n SYMBOL cap -176 288 R0 SYMATTR InstName C2 SYMATTR Value 167.1n SYMBOL cap -32 288 R0 SYMATTR InstName C3 SYMATTR Value 276.6n SYMBOL cap 112 288 R0 SYMATTR InstName C4 SYMATTR Value 721.3n SYMBOL ind -288 256 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 259.3µ SYMATTR SpiceLine Rser=0 SYMBOL ind -144 256 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 558.6µ SYMATTR SpiceLine Rser=0 SYMBOL ind 0 256 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L3 SYMATTR Value 879.5µ SYMATTR SpiceLine Rser=0 TEXT 40 80 Left 2 !.tran 0 400u 0 100n TEXT 104 200 Left 2 ;10 kHz Bessel TP TEXT 40 40 Left 2 !.wave "out.wav" 32 200meg in out TEXT -256 40 Left 2 !.options plotwinsize=0 TEXT -256 80 Left 2 !;ac dec 1k 100 10k TEXT 528 96 Left 2 ;Tg=Td*Z0/R1 TEXT 536 128 Left 2 ;(f<0.01/Td)