Electronics and Communication Engineering - Analog Electronics - Discussion
Discussion Forum : Analog Electronics - Section 2 (Q.No. 16)
16.
In figure, transistor βdc = 100 and LED voltage when it is conducting is 2 V. Then the base current which saturates the transistor is
Answer: Option
Explanation:
.
Discussion:
6 comments Page 1 of 1.
Prof. Shyam said:
9 years ago
IC = (Vcc-Vd)/RC = (20-2)/1000 = 18mA.
Ib = Ic/beta = 18mA/100 = 0.018mA.
Ib = Ic/beta = 18mA/100 = 0.018mA.
(1)
Sijil said:
1 decade ago
If the base resistance is 50k then how its possible I mean a value of 100 from where it comes?
Ayush Jain said:
1 decade ago
I think exact answer is 178 mA.
We can't forget the V drop of 0.2 V across Vce in saturation.
In this question it is negligible, but it may not be in other question.
We can't forget the V drop of 0.2 V across Vce in saturation.
In this question it is negligible, but it may not be in other question.
Kattamamatha said:
9 years ago
Can you explain how we get look?
Abhishek said:
9 years ago
It is 178 micro ampere.
Taijul islam said:
5 years ago
Answer will be (D).
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