Version 4
SHEET 1 1460 1096
WIRE -48 224 -144 224
WIRE 112 224 32 224
WIRE 224 224 176 224
WIRE 288 224 224 224
WIRE -144 272 -144 224
WIRE 224 272 224 224
WIRE -144 384 -144 352
WIRE 224 384 224 352
WIRE -112 768 64 592
FLAG -144 384 0
FLAG 288 224 out
IOPIN 288 224 Out
FLAG 224 384 0
SYMBOL res -64 240 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL voltage -144 256 R0
WINDOW 123 24 132 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 36 83 Left 2
SYMATTR Value2 AC 1
SYMATTR Value 0
SYMATTR InstName V1
SYMBOL cap 112 240 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 1µ
SYMBOL ind 208 256 R0
SYMATTR InstName L1
SYMATTR Value 1
TEXT -168 64 Left 2 !.ac dec 10000 10 1k
TEXT -160 128 Left 2 ;Bandpass with fc=1/(2*pi*sqrt(L*C))
TEXT -160 -192 Left 2 ;Bandpass Corner Frequencies with MEASURE
TEXT -136 512 Left 2 ;Ir(freq)
TEXT 312 816 Left 2 ;freq
TEXT 152 640 Left 2 ;-3dB
TEXT 40 544 Left 2 ;max
TEXT -168 -136 Left 2 !.options meascplxfmt=polar\n.MEAS AC Imax  MAX I(R1)\n.MEAS AC fc FIND freq WHEN mag(I(R1))=Imax*0.9999999\n.MEAS AC fu WHEN mag(I(R1))=Imax/sqrt(2) rise=1\n.MEAS AC fo WHEN mag(I(R1))=Imax/sqrt(2) fall=1\n.MEAS AC bw param fo-fu
TEXT -72 640 Left 2 ;-3dB
TEXT -8 680 Left 2 ;fu
TEXT 120 680 Left 2 ;fo
TEXT 56 624 Left 2 ;fc
TEXT -176 912 Left 2 ;View -> SPICE Error Log\n \nimax: MAX(i(r1))=(0.000999999,0.00531187°) FROM 10 TO 1000\nfc: freq=(159.122,0°) at 159.122\nfu: mag(i(r1))=imax/sqrt(2) AT 98.3631\nfo: mag(i(r1))=imax/sqrt(2) AT 257.518\nbw: fo-fu=(159.155,0°)
LINE Normal 256 768 64 592
LINE Normal 256 768 256 768
LINE Normal 304 816 -128 816
LINE Normal 288 832 304 816
LINE Normal 304 816 288 832
LINE Normal 288 800 304 816
RECTANGLE Normal 384 848 -176 464
CIRCLE Normal 80 576 48 608
CIRCLE Normal 149 631 117 663
CIRCLE Normal 21 631 -11 663