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�� , �� . 17.12, �. �� . 17.12, �.

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��. 17.12. �� (�) � ��(6) ��

�� . �� plots:

> restart:with(plots):
Warning, the name changecoords has been redefined

�� , �� , �� 0. ��, �� . 17.12 �� :

�� . �� , �� . �� , �� :

> solve({eql,eq2,eq3.eq4}�{Vl,V2.V3,Vo}):

�� Vo, VI, V2 � V3 �� :

> assign(%):

�� :

� �� :

�� f �� :

�� , � �� «��» �� . �� Maple 7 �� «� �� » �� -�� (AVM) � ��- �� (PhaseAV) �� :

> AVM=-evalc(abs(H)):
> PhaseAV:=evalc(argument(H)):

�� AVD � �� , �� (dB):

> AVdB:=20*1og10(AVM):

�� . �� -�� :

> R2D:=evalf(360/(2*Pi));R2D := 57.29577950
> AVdeg:=R2D*PhaseAV:

�� . �� :

> Rl:=100: R2:=100000: R3:=1000: R4:=10000: Cl:=1.*10^(-6): �2:=5*10^(-12): ��:=1*10^(-6): mu:=50:

�� -�� :

> gaindata:-NULL:
phasedata:=NULL:
for a from 0 to 8 do:
for i from 2*10^a to l(T(a+l) by 10^a do
gaindata:=gaindata, [1. evalf(subs(f=i,AVdB))];
phasedata:=phasedata, [i, eva1f(subs(f=i,AVdeg))]:
od: od:
> 1oglogp1ot([gaindata]. thickness»2, color=black, style=1ine, axes=boxed,
title=`�� K(f)`,1abels=['�� (Hz)VK(d8)']):

�� . 17.13.

��. 17.13. ��-��

�� -�� :

> 1og1ogplot([phasedata], thickness=2, color=b1ue, style=line, axes=boxed, title='�� (� ��)`, labels=['�� (Hz)','��']);

�� . 17.14.

��. 17.14. ��-��

�� f=1000 (��):

> AVmid:=eva1f(subs(f=1000, AVdB)):
AVmid=33.12074854

�� -�� , �� (�� -dAV � dB):

> dAV:=3: #�� (� dB �� )
> eq5:=AVmid-dAV=20*log10(AVM):

�� :

> flow:=fsolve(eq5,f. f-10..2000):flow:= 23.61659476
> fhigh:=fsolve(eqS,f, f-2000..100*10*6);
fliigh := .5737800225 107

�� -�� , �� :

> with(plottools) :h:=log10(AVnvid-dAV):
aplot:= Loglogplot([gaindata], thickness=2, color=b1ack. style=line, axes=boxed,
title='�� flow � fhigh ��', labels=['�� (Hz)VK(dB)']):
bplot:=line([0.1,h], [7.1,h], color=black, linestyle=3):
cplot:=line([log10(flow),0.58],[logHK flow). 1.6], color=blue, linestyle=3):
dplot:=line([log10(fh1gh).0.58],. [log10(fhigh).1.6],. color=red,. 1inestyle=3):
display([aplot.bplot,cplotJ,dplot]):

�� . 17.15.

�� , �� flow � fhigh, � �� , �� . �� .

�� , �� . �� , �� , �� -�� -�� .

��. 17.15. ��-��

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