Question

Coupled Amplih
The magnitude of low frequency voltage gain decreases with the
frequency of input voltage.
LOWER CUT-OFF FREQUENCY
The lower cut-off frequency is defined as the frequency at which the magn
frequency voltage gain falls to 5 of the magnitude of mid-frequency gain.
If y= v= lower cut-off frequency then
1
Am
2
Putting the values of Ay, and A. from equatioin (4) and (9) we get,
-h.R.
j
he+R
А,
wC
Аути
hie
1+
...(12
1A,,/=
he
Ri
hR
or
or
AMI
Am h+R,
j
he+R
A,
wC
h.Ru
h+R,
he+RL
j
;
wC
A.
(h+R)
j
(h+R) 1-
oC(hie+R).
A
0 = 2 TV
j
2nvC(h; +R)
or
or A,
A.
or Al=-
yanch -R)
1 C2vC(h,+R.)​

Answer 1

Answer:

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