Therefore, the required design is shown in Figure 13.79.
p-Section:
Firstly, let us find component values as in the following:
2
290601812
201
2
1005
4
1
40527
2
L
m
C
m
F
m
m
L
==
==
−
=
(.).
.
.
(.)
mH
µ
110527
477513936
2
−
×=
.
..
mH
The required design is shown in Figure 13.80.
13.11.3 Problems on Composite Filters
Example 13.21 Design a composite LPF to work
into 150 W with cut-off frequency of 1.5 kHz and very
high attenuation at 2 kHz.
Solution: Given
K= 150 W; f
c
= 1.5 kHz = 1500 Hz; f
∞
= 2000 Hz
Step 1:Let us design constant K-type filter
Now, for constant ...
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