Version 4
SHEET 1 1656 780
WIRE 352 -48 336 -48
WIRE 464 -48 400 -48
WIRE 400 -16 400 -48
WIRE 352 0 352 -48
WIRE -16 80 -80 80
WIRE 48 80 -16 80
WIRE 160 80 96 80
WIRE 352 80 352 48
WIRE 400 80 400 64
WIRE -80 112 -80 80
WIRE 96 128 96 80
WIRE 48 144 48 80
WIRE -80 224 -80 192
WIRE 48 224 48 192
WIRE 96 224 96 208
WIRE 272 304 64 304
WIRE 432 304 272 304
WIRE 64 336 64 304
WIRE 272 336 272 304
WIRE -48 448 -80 448
WIRE 64 448 64 400
WIRE 64 448 16 448
WIRE 96 448 64 448
WIRE 128 448 96 448
WIRE 224 448 192 448
WIRE 272 448 272 416
WIRE 272 448 224 448
WIRE 352 448 272 448
WIRE 432 464 432 304
WIRE 432 464 416 464
WIRE 480 464 432 464
WIRE 64 480 64 448
WIRE 352 480 272 480
WIRE 272 512 272 480
WIRE 64 592 64 560
FLAG -80 224 0
FLAG 48 224 0
FLAG 96 224 0
FLAG 64 592 0
FLAG -16 80 in
FLAG -80 448 in
FLAG 480 464 HP
FLAG 160 80 test
FLAG 96 448 1
FLAG 224 448 2
FLAG 272 512 0
FLAG 352 80 0
FLAG 400 80 0
FLAG 464 -48 testab
FLAG 336 -48 in
SYMBOL voltage -80 96 R0
SYMATTR InstName V1
SYMATTR Value AC 1
SYMBOL e 96 112 R0
SYMATTR InstName E1
SYMATTR Value Laplace=-(C1/C2)*s*s/(s*s+s*(C1+C2+C3)/(R1*C2*C3)+1/(R1*R2*C2*C3))
SYMBOL Opamps\\opamp 384 400 R0
SYMATTR InstName U2
SYMBOL Misc\\EuropeanResistor 256 320 R0
SYMATTR InstName R1
SYMATTR Value {R1}
SYMBOL Misc\\EuropeanResistor 48 464 R0
SYMATTR InstName R2
SYMATTR Value {R2}
SYMBOL cap -48 464 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value {C1}
SYMBOL cap 128 464 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C3
SYMATTR Value {C3}
SYMBOL cap 48 336 R0
SYMATTR InstName C2
SYMATTR Value {C2}
SYMBOL e 400 -32 R0
SYMATTR InstName E2
SYMATTR Value Laplace=(-C1/C2)/(1+a*wg/s+b*wg*wg/(s*s))
TEXT -80 -72 Left 2 !.lib opamp.sub
TEXT -80 -32 Left 2 !.ac dec 100 100 10k
TEXT -72 -344 Left 2 !.param fg=1000\n.param wg=2*pi*fg\n.param a=1.3617 b=0.618\n.param C=10n\n.param C1=C\n.param C2=C\n.param C3=C\n.param R1=(C1+C2+C3)/(a*wg*C2*C3)\n.param R2=1/(b*wg*wg*R1*C2*C3)
TEXT 32 -1008 Left 4 ;Highpass F(s) = P^2/(1+a/P + b/P^2)
TEXT -64 -768 Left 2 ;Bessel\n \nOrdnung i ai bi\n \n1 1 1,0000 0,0000\n \n2 1 1,3617 0,6180\n \n3 1 0,7560 0,0000 \n- 2 0,9996 0,4772\n \n4 1 1,3397 0,4889\n- 2 0,7743 0,3890
TEXT 200 -768 Left 2 ;Butterworth\n \nOrdnung i ai bi\n \n1 1 1,0000 0,0000\n \n2 1 1,4142 1,0000\n \n3 1 1,0000 0,0000\n- 2 1,0000 1,0000\n \n4 1 1,8478 1,0000\n- 2 0,7654 1,0000
TEXT 448 -792 Left 2 ;Tschebyscheff\n(0,5 dB Welligkeit)\n \nOrdnung i ai bi\n \n1 1 1,0000 0,0000\n \n2 1 1,3614 1,3827\n \n3 1 1,8626 0,0000\n- 2 0,6402 1,1931\n \n4 1 2,6282 3,4341\n- 2 0,3648 1,1509
TEXT 704 -792 Left 2 ;Tschebyscheff\n(3 dB Welligkeit)\n \nOrdnung i ai bi\n \n1 1 1,0000 0,0000\n \n2 1 1,0650 1,9305\n \n3 1 3,3496 0,0000\n- 2 0,3559 1,1923\n \n4 1 2,1853 5,5339\n- 2 0,1964 1,2009
TEXT -56 -944 Left 2 ;Literatur: http://www.fbeit.htwk-leipzig.de/~reinhold/Elektronik_Uni_Lpz/EL2_Kap_3.pdf\nProf. Dr. Wolfgang Reinhold 24/24\nHTWK Leipzig\nFakultät Elektrotechnik und Informationstechnik Kap_3_Filter.docx, 20.05.2011
TEXT 584 392 Left 2 ;View -> SPICE Error Log\nr1 hp 2 35063.8781872429 \nr2 1 0 11689.3897523319 \nc1 in 1 1e-008 \nc3 1 2 1e-008 \nc2 hp 1 1e-008