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Byju's Answer
Standard XII
Physics
Full Wave Rectifier
Consider a vo...
Question
Consider a voltage regulator circuit shown in the figure below:
The circuit is connected to a supply voltage of
v
i
n
=
20
V
.
The circuit consists of a BJT with
β
=
99
and
V
B
E
=
0.7
V
. The value of current
I
z
is equal to _______
μ
A
.
907
Open in App
Solution
The correct option is
A
907
I
z
+
I
B
=
I
1
I
z
=
I
1
−
I
B
V
0
=
V
Z
−
V
B
E
=
10
−
0.7
=
9.3
V
I
E
=
V
0
1
k
Ω
=
9.3
V
1
k
Ω
=
9.3
m
A
I
B
=
I
E
β
+
1
=
9.3
100
=
93
μ
A
I
1
=
20
−
10
10
k
=
1
m
A
I
z
=
(
1000
−
93
)
μ
A
I
z
=
907
μ
A
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